diff --git a/Gemfile b/Gemfile
index 7dce20e..c08c581 100644
--- a/Gemfile
+++ b/Gemfile
@@ -32,4 +32,6 @@ group :test do
   gem "minitest-reporters", "~> 1.4"
 
   gem "simplecov", require: false
+
+  gem "grape-entity", require: false
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 8128ecc..51224e9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,6 +53,9 @@ GEM
       mustermann-grape (~> 1.1.0)
       rack (>= 2)
       zeitwerk
+    grape-entity (1.0.1)
+      activesupport (>= 3.0.0)
+      multi_json (>= 1.3.2)
     i18n (1.14.5)
       concurrent-ruby (~> 1.0)
     io-console (0.7.2)
@@ -67,6 +70,7 @@ GEM
       builder
       minitest (>= 5.0)
       ruby-progressbar
+    multi_json (1.15.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     mustermann-grape (1.1.0)
@@ -169,6 +173,7 @@ PLATFORMS
 
 DEPENDENCIES
   bundler-audit
+  grape-entity
   grape_sorbet!
   irb
   minitest (~> 5.0)
diff --git a/lib/grape_sorbet.rb b/lib/grape_sorbet.rb
index 0a98c66..09f6d89 100644
--- a/lib/grape_sorbet.rb
+++ b/lib/grape_sorbet.rb
@@ -5,3 +5,4 @@ module GrapeSorbet
 end
 
 require_relative "grape_sorbet/version"
+require_relative "grape_sorbet/grape_entity_name"
diff --git a/lib/grape_sorbet/grape_entity_name.rb b/lib/grape_sorbet/grape_entity_name.rb
new file mode 100644
index 0000000..b7fced5
--- /dev/null
+++ b/lib/grape_sorbet/grape_entity_name.rb
@@ -0,0 +1,89 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "sorbet-runtime"
+
+module GrapeSorbet
+  # This is a patch for Grape::Entity to make it easier to define custom entity names when using Sorbet.
+  #
+  # This patch defines a class setter `entity_name=` that can be used to define a custom entity name in a single line,
+  # while still working as expected with grape-swagger:
+  # ```
+  # class Link < Grape::Entity
+  #   self.entity_name = "LinkedStatus"
+  # end
+  # ```
+  #
+  # Without this patch, you would have to define a custom entity name like this:
+  # ```
+  # class Link < Grape::Entity
+  #   extend T::Sig
+  #
+  #   sig { returns(String) }
+  #   def self.entity_name
+  #     "LinkedStatus"
+  #   end
+  # end
+  # ```
+  #
+  # or even more verbose, if you're using the `Style/ClassMethodsDefinitions` Rubocop rule with
+  # `EnforcedStyle: self_class`:
+  # ```
+  # class Link < Grape::Entity
+  #   class << self
+  #     extend T::Sig
+  #
+  #     sig { returns(String) }
+  #     def entity_name
+  #       "LinkedStatus"
+  #     end
+  #   end
+  # end
+  # ```
+  module GrapeEntityName
+    extend T::Sig
+
+    include Kernel
+
+    # Sets the entity name.
+    #
+    # Used by grape-swagger to define a custom name to use in the OpenAPI schema instead of generating it from the
+    # fully qualified class name.
+    #
+    # @param entity_name [String] The custom entity name.
+    sig { params(entity_name: String).returns(String) }
+    attr_writer :entity_name
+
+    # Returns the custom entity name if one has been set (using `entity_name=`), otherwise raises an error.
+    #
+    # @return [String] The custom entity name.
+    # @raise [StandardError] If no custom entity name has been set.
+    sig { returns(String) }
+    def entity_name
+      @entity_name = T.let(@entity_name, T.nilable(String))
+
+      return @entity_name unless @entity_name.nil?
+
+      raise "entity_name has not been set for #{self}, call `#{self}.entity_name = \"...\"` to set it"
+    end
+
+    sig { params(method_name: T.any(String, Symbol), include_all: T.untyped).returns(T::Boolean) }
+    def respond_to?(method_name, include_all = false)
+      # grape-swagger checks if the model class responds to `:entity_name`, so we need to return false if
+      # `@entity_name` is nil (meaning `entity_name=` was never called).
+      if method_name.to_sym == :entity_name
+        return !!(defined?(@entity_name) && !@entity_name.nil?)
+      end
+
+      super
+    end
+  end
+end
+
+begin
+  require "grape-entity"
+rescue LoadError
+  return
+else
+  Grape::Entity.extend(GrapeSorbet::GrapeEntityName)
+end
diff --git a/sorbet/rbi/dsl/grape/dsl/api.rbi b/sorbet/rbi/dsl/grape/dsl/api.rbi
new file mode 100644
index 0000000..0cd80b5
--- /dev/null
+++ b/sorbet/rbi/dsl/grape/dsl/api.rbi
@@ -0,0 +1,17 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for dynamic methods in `Grape::DSL::API`.
+# Please instead update this file by running `bin/tapioca dsl Grape::DSL::API`.
+
+
+module Grape::DSL::API
+  mixes_in_class_methods ::Grape::Middleware::Auth::DSL::ClassMethods
+  mixes_in_class_methods ::Grape::DSL::Configuration::ClassMethods
+  mixes_in_class_methods ::Grape::DSL::Validations::ClassMethods
+  mixes_in_class_methods ::Grape::DSL::Callbacks::ClassMethods
+  mixes_in_class_methods ::Grape::DSL::Helpers::ClassMethods
+  mixes_in_class_methods ::Grape::DSL::Middleware::ClassMethods
+  mixes_in_class_methods ::Grape::DSL::RequestResponse::ClassMethods
+  mixes_in_class_methods ::Grape::DSL::Routing::ClassMethods
+end
diff --git a/sorbet/rbi/dsl/grape/dsl/callbacks.rbi b/sorbet/rbi/dsl/grape/dsl/callbacks.rbi
new file mode 100644
index 0000000..8f6a80c
--- /dev/null
+++ b/sorbet/rbi/dsl/grape/dsl/callbacks.rbi
@@ -0,0 +1,10 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for dynamic methods in `Grape::DSL::Callbacks`.
+# Please instead update this file by running `bin/tapioca dsl Grape::DSL::Callbacks`.
+
+
+module Grape::DSL::Callbacks
+  mixes_in_class_methods ::Grape::DSL::Configuration::ClassMethods
+end
diff --git a/sorbet/rbi/dsl/grape/dsl/helpers.rbi b/sorbet/rbi/dsl/grape/dsl/helpers.rbi
new file mode 100644
index 0000000..355b144
--- /dev/null
+++ b/sorbet/rbi/dsl/grape/dsl/helpers.rbi
@@ -0,0 +1,10 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for dynamic methods in `Grape::DSL::Helpers`.
+# Please instead update this file by running `bin/tapioca dsl Grape::DSL::Helpers`.
+
+
+module Grape::DSL::Helpers
+  mixes_in_class_methods ::Grape::DSL::Configuration::ClassMethods
+end
diff --git a/sorbet/rbi/dsl/grape/dsl/middleware.rbi b/sorbet/rbi/dsl/grape/dsl/middleware.rbi
new file mode 100644
index 0000000..dbbd333
--- /dev/null
+++ b/sorbet/rbi/dsl/grape/dsl/middleware.rbi
@@ -0,0 +1,10 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for dynamic methods in `Grape::DSL::Middleware`.
+# Please instead update this file by running `bin/tapioca dsl Grape::DSL::Middleware`.
+
+
+module Grape::DSL::Middleware
+  mixes_in_class_methods ::Grape::DSL::Configuration::ClassMethods
+end
diff --git a/sorbet/rbi/dsl/grape/dsl/request_response.rbi b/sorbet/rbi/dsl/grape/dsl/request_response.rbi
new file mode 100644
index 0000000..25aadf7
--- /dev/null
+++ b/sorbet/rbi/dsl/grape/dsl/request_response.rbi
@@ -0,0 +1,10 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for dynamic methods in `Grape::DSL::RequestResponse`.
+# Please instead update this file by running `bin/tapioca dsl Grape::DSL::RequestResponse`.
+
+
+module Grape::DSL::RequestResponse
+  mixes_in_class_methods ::Grape::DSL::Configuration::ClassMethods
+end
diff --git a/sorbet/rbi/dsl/grape/dsl/routing.rbi b/sorbet/rbi/dsl/grape/dsl/routing.rbi
new file mode 100644
index 0000000..73e4ad7
--- /dev/null
+++ b/sorbet/rbi/dsl/grape/dsl/routing.rbi
@@ -0,0 +1,10 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for dynamic methods in `Grape::DSL::Routing`.
+# Please instead update this file by running `bin/tapioca dsl Grape::DSL::Routing`.
+
+
+module Grape::DSL::Routing
+  mixes_in_class_methods ::Grape::DSL::Configuration::ClassMethods
+end
diff --git a/sorbet/rbi/dsl/grape/dsl/validations.rbi b/sorbet/rbi/dsl/grape/dsl/validations.rbi
new file mode 100644
index 0000000..0c69dd5
--- /dev/null
+++ b/sorbet/rbi/dsl/grape/dsl/validations.rbi
@@ -0,0 +1,10 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for dynamic methods in `Grape::DSL::Validations`.
+# Please instead update this file by running `bin/tapioca dsl Grape::DSL::Validations`.
+
+
+module Grape::DSL::Validations
+  mixes_in_class_methods ::Grape::DSL::Configuration::ClassMethods
+end
diff --git a/sorbet/rbi/gems/grape-entity@1.0.1.rbi b/sorbet/rbi/gems/grape-entity@1.0.1.rbi
new file mode 100644
index 0000000..d71f2a3
--- /dev/null
+++ b/sorbet/rbi/gems/grape-entity@1.0.1.rbi
@@ -0,0 +1,1151 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for types exported from the `grape-entity` gem.
+# Please instead update this file by running `bin/tapioca gem grape-entity`.
+
+
+# source://grape-entity//lib/grape_entity/entity.rb#5
+module Grape
+  class << self
+    # source://grape/2.1.2/lib/grape.rb#61
+    def deprecator; end
+  end
+end
+
+# An Entity is a lightweight structure that allows you to easily
+# represent data from your application in a consistent and abstracted
+# way in your API. Entities can also provide documentation for the
+# fields exposed.
+#
+# Entities are not independent structures, rather, they create
+# **representations** of other Ruby objects using a number of methods
+# that are convenient for use in an API. Once you've defined an Entity,
+# you can use it in your API like this:
+#
+# @example Entity Definition
+#
+#   module API
+#   module Entities
+#   class User < Grape::Entity
+#   expose :first_name, :last_name, :screen_name, :location
+#   expose :field, documentation: { type: "string", desc: "describe the field" }
+#   expose :latest_status, using: API::Status, as: :status, unless: { collection: true }
+#   expose :email, if: { type: :full }
+#   expose :new_attribute, if: { version: 'v2' }
+#   expose(:name) { |model, options| [model.first_name, model.last_name].join(' ') }
+#   end
+#   end
+#   end
+# @example Usage in the API Layer
+#
+#   module API
+#   class Users < Grape::API
+#   version 'v2'
+#
+#   desc 'User index', { params: API::Entities::User.documentation }
+#   get '/users' do
+#   @users = User.all
+#   type = current_user.admin? ? :full : :default
+#   present @users, with: API::Entities::User, type: type
+#   end
+#   end
+#   end
+#
+# source://grape-entity//lib/grape_entity/entity.rb#45
+class Grape::Entity
+  # @return [Entity] a new instance of Entity
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#479
+  def initialize(object, options = T.unsafe(nil)); end
+
+  # The serializable hash is the Entity's primary output. It is the transformed
+  # hash for the given data model and is used as the basis for serialization to
+  # JSON and other formats.
+  #
+  # @param runtime_options [Hash] Any options you pass in here will be known to the entity
+  #   representation, this is where you can trigger things from conditional options
+  #   etc.
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#508
+  def as_json(runtime_options = T.unsafe(nil)); end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#540
+  def delegate_attribute(attribute); end
+
+  # Returns the value of attribute delegator.
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#46
+  def delegator; end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#493
+  def documentation; end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#532
+  def exec_with_attribute(attribute, &block); end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#516
+  def exec_with_object(options, &block); end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#497
+  def formatters; end
+
+  # Prevent default serialization of :options or :delegator.
+  def inspect; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#550
+  def is_defined_in_entity?(attribute); end
+
+  # Returns the value of attribute object.
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#46
+  def object; end
+
+  # Returns the value of attribute options.
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#46
+  def options; end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#465
+  def presented; end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#489
+  def root_exposure; end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#485
+  def root_exposures; end
+
+  # The serializable hash is the Entity's primary output. It is the transformed
+  # hash for the given data model and is used as the basis for serialization to
+  # JSON and other formats.
+  #
+  # @param runtime_options [Hash] Any options you pass in here will be known to the entity
+  #   representation, this is where you can trigger things from conditional options
+  #   etc.
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#508
+  def serializable_hash(runtime_options = T.unsafe(nil)); end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#559
+  def to_json(options = T.unsafe(nil)); end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#564
+  def to_xml(options = T.unsafe(nil)); end
+
+  # source://grape-entity//lib/grape_entity/entity.rb#536
+  def value_for(key, options = T.unsafe(nil)); end
+
+  class << self
+    # source://grape-entity//lib/grape_entity/entity.rb#218
+    def build_exposure_for_attribute(attribute, nesting_stack, options, block); end
+
+    # @return [Boolean]
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#257
+    def can_unexpose?; end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#261
+    def cannot_unexpose!; end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#129
+    def delegation_opts; end
+
+    # Returns a hash, the keys are symbolized references to fields in the entity,
+    # the values are document keys in the entity's documentation key. When calling
+    # #docmentation, any exposure without a documentation key will be ignored.
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#283
+    def documentation; end
+
+    # This method is the primary means by which you will declare what attributes
+    # should be exposed by the entity.
+    #
+    # Note the parameters passed in via the lambda syntax.
+    #
+    #
+    # @example as: a proc or lambda
+    #
+    #   object = OpenStruct(awesomeness: 'awesome_key', awesome: 'not-my-key', other: 'other-key' )
+    #
+    #   class MyEntity < Grape::Entity
+    #   expose :awesome, as: proc { object.awesomeness }
+    #   expose :awesomeness, as: ->(object, opts) { object.other }
+    #   end
+    #
+    #   => { 'awesome_key': 'not-my-key', 'other-key': 'awesome_key' }
+    # @option options
+    # @option options
+    # @option options
+    # @option options
+    # @option options
+    # @option options
+    # @option options
+    # @option options
+    # @param options [Hash] a customizable set of options
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#190
+    def expose(*args, &block); end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#241
+    def find_exposure(attribute); end
+
+    # This allows you to declare a Proc in which exposures can be formatted with.
+    # It take a block with an arity of 1 which is passed as the value of the exposed attribute.
+    #
+    # @example Formatter declaration
+    #
+    #   module API
+    #   module Entities
+    #   class User < Grape::Entity
+    #   format_with :timestamp do |date|
+    #   date.strftime('%m/%d/%Y')
+    #   end
+    #
+    #   expose :birthday, :last_signed_in, format_with: :timestamp
+    #   end
+    #   end
+    #   end
+    # @example Formatters are available to all decendants
+    #
+    #   Grape::Entity.format_with :timestamp do |date|
+    #   date.strftime('%m/%d/%Y')
+    #   end
+    # @param name [Symbol] the name of the formatter
+    # @param block [Proc] the block that will interpret the exposed attribute
+    # @raise [ArgumentError]
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#315
+    def format_with(name, &block); end
+
+    # Returns all formatters that are registered for this and it's ancestors
+    #
+    # @return [Hash] of formatters
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#111
+    def formatters; end
+
+    # Sets the attribute formatters
+    #
+    # @param value the value to set the attribute formatters to.
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#107
+    def formatters=(_arg0); end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#115
+    def hash_access; end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#119
+    def hash_access=(value); end
+
+    # @private
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#136
+    def inherited(subclass); end
+
+    # Merges the given options with current block options.
+    #
+    # @param options [Hash] Exposure options.
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#593
+    def merge_options(options); end
+
+    # This allows you to present a collection of objects.
+    #
+    #  When false (default) every object in a collection to present will be wrapped separately
+    #  into an instance of your presenter.
+    #
+    # @example Entity Definition
+    #
+    #   module API
+    #   module Entities
+    #   class User < Grape::Entity
+    #   expose :id
+    #   end
+    #
+    #   class Users < Grape::Entity
+    #   present_collection true
+    #   expose :items, as: 'users', using: API::Entities::User
+    #   expose :version, documentation: { type: 'string',
+    #   desc: 'actual api version',
+    #   required: true }
+    #
+    #   def version
+    #   options[:version]
+    #   end
+    #   end
+    #   end
+    #   end
+    # @example Usage in the API Layer
+    #
+    #   module API
+    #   class Users < Grape::API
+    #   version 'v2'
+    #
+    #   # this will render { "users" : [ { "id" : "1" }, { "id" : "2" } ], "version" : "v2" }
+    #   get '/users' do
+    #   @users = User.all
+    #   present @users, with: API::Entities::Users
+    #   end
+    #
+    #   # this will render { "user" : { "id" : "1" } }
+    #   get '/users/:id' do
+    #   @user = User.find(params[:id])
+    #   present @user, with: API::Entities::User
+    #   end
+    #   end
+    #   end
+    # @param present_collection [true or false] when true all objects will be available as
+    #   items in your presenter instead of wrapping each object in an instance of your presenter.
+    # @param collection_name [Symbol] the name of the collection accessor in your entity object.
+    #   Default :items
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#416
+    def present_collection(present_collection = T.unsafe(nil), collection_name = T.unsafe(nil)); end
+
+    # This convenience method allows you to instantiate one or more entities by
+    # passing either a singular or collection of objects. Each object will be
+    # initialized with the same options. If an array of objects is passed in,
+    # an array of entities will be returned. If a single object is passed in,
+    # a single entity will be returned.
+    #
+    # @option options
+    # @option options
+    # @option options
+    # @option options
+    # @param objects [Object or Array] One or more objects to be represented.
+    # @param options [Hash] Options that will be passed through to each entity
+    #   representation.
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#438
+    def represent(objects, options = T.unsafe(nil)); end
+
+    # This allows you to set a root element name for your representation.
+    #
+    # @example Entity Definition
+    #
+    #   module API
+    #   module Entities
+    #   class User < Grape::Entity
+    #   root 'users', 'user'
+    #   expose :id
+    #   end
+    #   end
+    #   end
+    # @example Usage in the API Layer
+    #
+    #   module API
+    #   class Users < Grape::API
+    #   version 'v2'
+    #
+    #   # this will render { "users" : [ { "id" : "1" }, { "id" : "2" } ] }
+    #   get '/users' do
+    #   @users = User.all
+    #   present @users, with: API::Entities::User
+    #   end
+    #
+    #   # this will render { "user" : { "id" : "1" } }
+    #   get '/users/:id' do
+    #   @user = User.find(params[:id])
+    #   present @user, with: API::Entities::User
+    #   end
+    #   end
+    #   end
+    # @param plural [String] the root key to use when representing
+    #   a collection of objects. If missing or nil, no root key will be used
+    #   when representing collections of objects.
+    # @param singular [String] the root key to use when representing
+    #   a single object. If missing or nil, no root key will be used when
+    #   representing an individual object.
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#360
+    def root(plural, singular = T.unsafe(nil)); end
+
+    # This method returns the entity's root or collection root node, or its parent's
+    #
+    # @param root_type: either :collection_root or just :root
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#456
+    def root_element(root_type); end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#103
+    def root_exposure; end
+
+    # Sets the attribute root_exposure
+    #
+    # @param value the value to set the attribute root_exposure to.
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#107
+    def root_exposure=(_arg0); end
+
+    # Returns exposures that have been declared for this Entity on the top level.
+    #
+    # @return [Array] of exposures
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#237
+    def root_exposures; end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#245
+    def unexpose(*attributes); end
+
+    # source://grape-entity//lib/grape_entity/entity.rb#251
+    def unexpose_all; end
+
+    # Raises an error if the given options include unknown keys.
+    # Renames aliased options.
+    #
+    # @param options [Hash] Exposure options.
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#622
+    def valid_options(options); end
+
+    # Set options that will be applied to any exposures declared inside the block.
+    #
+    # @example Multi-exposure if
+    #
+    #   class MyEntity < Grape::Entity
+    #   with_options if: { awesome: true } do
+    #   expose :awesome, :sweet
+    #   end
+    #   end
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#274
+    def with_options(options); end
+  end
+end
+
+# source://grape-entity//lib/grape_entity/condition/base.rb#5
+module Grape::Entity::Condition
+  class << self
+    # source://grape-entity//lib/grape_entity/condition.rb#12
+    def new_if(arg); end
+
+    # source://grape-entity//lib/grape_entity/condition.rb#16
+    def new_unless(arg); end
+
+    private
+
+    # source://grape-entity//lib/grape_entity/condition.rb#22
+    def condition(inverse, arg); end
+  end
+end
+
+# source://grape-entity//lib/grape_entity/condition/base.rb#6
+class Grape::Entity::Condition::Base
+  # @return [Base] a new instance of Base
+  #
+  # source://grape-entity//lib/grape_entity/condition/base.rb#11
+  def initialize(inverse = T.unsafe(nil)); end
+
+  # source://grape-entity//lib/grape_entity/condition/base.rb#15
+  def ==(other); end
+
+  # @raise [NotImplementedError]
+  #
+  # source://grape-entity//lib/grape_entity/condition/base.rb#27
+  def if_value(_entity, _options); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/condition/base.rb#19
+  def inversed?; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/condition/base.rb#23
+  def met?(entity, options); end
+
+  # source://grape-entity//lib/grape_entity/condition/base.rb#31
+  def unless_value(entity, options); end
+
+  class << self
+    # source://grape-entity//lib/grape_entity/condition/base.rb#7
+    def new(inverse, *_arg1, **_arg2, &_arg3); end
+  end
+end
+
+# source://grape-entity//lib/grape_entity/condition/block_condition.rb#6
+class Grape::Entity::Condition::BlockCondition < ::Grape::Entity::Condition::Base
+  # source://grape-entity//lib/grape_entity/condition/block_condition.rb#13
+  def ==(other); end
+
+  # Returns the value of attribute block.
+  #
+  # source://grape-entity//lib/grape_entity/condition/block_condition.rb#7
+  def block; end
+
+  # source://grape-entity//lib/grape_entity/condition/block_condition.rb#17
+  def if_value(entity, options); end
+
+  # source://grape-entity//lib/grape_entity/condition/block_condition.rb#9
+  def setup(block); end
+end
+
+# source://grape-entity//lib/grape_entity/condition/hash_condition.rb#6
+class Grape::Entity::Condition::HashCondition < ::Grape::Entity::Condition::Base
+  # source://grape-entity//lib/grape_entity/condition/hash_condition.rb#13
+  def ==(other); end
+
+  # Returns the value of attribute cond_hash.
+  #
+  # source://grape-entity//lib/grape_entity/condition/hash_condition.rb#7
+  def cond_hash; end
+
+  # source://grape-entity//lib/grape_entity/condition/hash_condition.rb#17
+  def if_value(_entity, options); end
+
+  # source://grape-entity//lib/grape_entity/condition/hash_condition.rb#9
+  def setup(cond_hash); end
+
+  # source://grape-entity//lib/grape_entity/condition/hash_condition.rb#21
+  def unless_value(_entity, options); end
+end
+
+# source://grape-entity//lib/grape_entity/condition/symbol_condition.rb#6
+class Grape::Entity::Condition::SymbolCondition < ::Grape::Entity::Condition::Base
+  # source://grape-entity//lib/grape_entity/condition/symbol_condition.rb#13
+  def ==(other); end
+
+  # source://grape-entity//lib/grape_entity/condition/symbol_condition.rb#17
+  def if_value(_entity, options); end
+
+  # source://grape-entity//lib/grape_entity/condition/symbol_condition.rb#9
+  def setup(symbol); end
+
+  # Returns the value of attribute symbol.
+  #
+  # source://grape-entity//lib/grape_entity/condition/symbol_condition.rb#7
+  def symbol; end
+end
+
+# The Entity DSL allows you to mix entity functionality into
+# your existing classes.
+#
+# source://grape-entity//lib/grape_entity/entity.rb#50
+module Grape::Entity::DSL
+  mixes_in_class_methods ::Grape::Entity::DSL::ClassMethods
+
+  # Instantiates an entity version of this object.
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#97
+  def entity(options = T.unsafe(nil)); end
+
+  class << self
+    # @private
+    #
+    # source://grape-entity//lib/grape_entity/entity.rb#51
+    def included(base); end
+  end
+end
+
+# source://grape-entity//lib/grape_entity/entity.rb#57
+module Grape::Entity::DSL::ClassMethods
+  # Call this to make exposures to the entity for this Class.
+  # Can be called with symbols for the attributes to expose,
+  # a block that yields the full Entity DSL (See Grape::Entity),
+  # or both.
+  #
+  # @example Symbols only.
+  #
+  #   class User
+  #   include Grape::Entity::DSL
+  #
+  #   entity :name, :email
+  #   end
+  # @example Mixed.
+  #
+  #   class User
+  #   include Grape::Entity::DSL
+  #
+  #   entity :name, :email do
+  #   expose :latest_status, using: Status::Entity, if: :include_status
+  #   expose :new_attribute, if: { version: 'v2' }
+  #   end
+  #   end
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#89
+  def entity(*exposures, &block); end
+
+  # Returns the automatically-created entity class for this
+  # Class.
+  #
+  # source://grape-entity//lib/grape_entity/entity.rb#60
+  def entity_class(search_ancestors = T.unsafe(nil)); end
+end
+
+# source://grape-entity//lib/grape_entity/delegator/base.rb#5
+module Grape::Entity::Delegator
+  class << self
+    # source://grape-entity//lib/grape_entity/delegator.rb#11
+    def new(object); end
+  end
+end
+
+# source://grape-entity//lib/grape_entity/delegator/base.rb#6
+class Grape::Entity::Delegator::Base
+  # @return [Base] a new instance of Base
+  #
+  # source://grape-entity//lib/grape_entity/delegator/base.rb#9
+  def initialize(object); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/delegator/base.rb#17
+  def accepts_options?; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/delegator/base.rb#13
+  def delegatable?(_attribute); end
+
+  # Returns the value of attribute object.
+  #
+  # source://grape-entity//lib/grape_entity/delegator/base.rb#7
+  def object; end
+end
+
+# source://grape-entity//lib/grape_entity/delegator/hash_object.rb#6
+class Grape::Entity::Delegator::HashObject < ::Grape::Entity::Delegator::Base
+  # source://grape-entity//lib/grape_entity/delegator/hash_object.rb#7
+  def delegate(attribute, hash_access: T.unsafe(nil)); end
+end
+
+# source://grape-entity//lib/grape_entity/delegator/openstruct_object.rb#6
+class Grape::Entity::Delegator::OpenStructObject < ::Grape::Entity::Delegator::Base
+  # source://grape-entity//lib/grape_entity/delegator/openstruct_object.rb#7
+  def delegate(attribute); end
+end
+
+# source://grape-entity//lib/grape_entity/delegator/plain_object.rb#6
+class Grape::Entity::Delegator::PlainObject < ::Grape::Entity::Delegator::Base
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/delegator/plain_object.rb#11
+  def delegatable?(attribute); end
+
+  # source://grape-entity//lib/grape_entity/delegator/plain_object.rb#7
+  def delegate(attribute); end
+end
+
+# source://grape-entity//lib/grape_entity/deprecated.rb#5
+class Grape::Entity::Deprecated < ::StandardError
+  # @return [Deprecated] a new instance of Deprecated
+  #
+  # source://grape-entity//lib/grape_entity/deprecated.rb#6
+  def initialize(msg, spec); end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/base.rb#8
+module Grape::Entity::Exposure
+  class << self
+    # source://grape-entity//lib/grape_entity/exposure.rb#16
+    def new(attribute, options); end
+
+    private
+
+    # source://grape-entity//lib/grape_entity/exposure.rb#95
+    def build_block_exposure(base_args, passed_proc); end
+
+    # source://grape-entity//lib/grape_entity/exposure.rb#72
+    def build_class_exposure(base_args, using_class, passed_proc); end
+
+    # source://grape-entity//lib/grape_entity/exposure.rb#99
+    def build_delegator_exposure(base_args); end
+
+    # source://grape-entity//lib/grape_entity/exposure.rb#83
+    def build_formatter_exposure(base_args, format_with); end
+
+    # source://grape-entity//lib/grape_entity/exposure.rb#91
+    def build_nesting_exposure(base_args); end
+
+    # source://grape-entity//lib/grape_entity/exposure.rb#39
+    def compile_conditions(attribute, options); end
+
+    # source://grape-entity//lib/grape_entity/exposure.rb#55
+    def expose_nil_condition(attribute, options); end
+  end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/base.rb#9
+class Grape::Entity::Exposure::Base
+  # @return [Base] a new instance of Base
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#16
+  def initialize(attribute, options, conditions); end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#38
+  def ==(other); end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#111
+  def attr_path(entity, options); end
+
+  # Returns the value of attribute attribute.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#10
+  def attribute; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#99
+  def conditional?; end
+
+  # Returns the value of attribute conditions.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#10
+  def conditions; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#103
+  def conditions_met?(entity, options); end
+
+  # if we have any nesting exposures with the same name.
+  #
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#52
+  def deep_complex_nesting?(entity); end
+
+  # Returns the value of attribute documentation.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#10
+  def documentation; end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#30
+  def dup(&block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#34
+  def dup_args; end
+
+  # Returns the value of attribute for_merge.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#10
+  def for_merge; end
+
+  # Returns the value of attribute is_safe.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#10
+  def is_safe; end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#119
+  def key(entity = T.unsafe(nil)); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#47
+  def nesting?; end
+
+  # Returns the value of attribute override.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#10
+  def override; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#128
+  def override?; end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#72
+  def serializable_value(entity, options); end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#45
+  def setup; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#107
+  def should_expose?(entity, options); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#95
+  def should_return_key?(options); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#56
+  def valid?(entity); end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#88
+  def valid_value(entity, options); end
+
+  # @raise [NotImplementedError]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#68
+  def value(_entity, _options); end
+
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#123
+  def with_attr_path(entity, options, &block); end
+
+  protected
+
+  # Returns the value of attribute options.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/base.rb#134
+  def options; end
+
+  class << self
+    # source://grape-entity//lib/grape_entity/exposure/base.rb#12
+    def new(attribute, options, conditions, *_arg3, **_arg4, &_arg5); end
+  end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/block_exposure.rb#6
+class Grape::Entity::Exposure::BlockExposure < ::Grape::Entity::Exposure::Base
+  # source://grape-entity//lib/grape_entity/exposure/block_exposure.rb#17
+  def ==(other); end
+
+  # Returns the value of attribute block.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/block_exposure.rb#7
+  def block; end
+
+  # source://grape-entity//lib/grape_entity/exposure/block_exposure.rb#13
+  def dup; end
+
+  # source://grape-entity//lib/grape_entity/exposure/block_exposure.rb#25
+  def setup(&block); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/block_exposure.rb#21
+  def valid?(_entity); end
+
+  # source://grape-entity//lib/grape_entity/exposure/block_exposure.rb#9
+  def value(entity, options); end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/delegator_exposure.rb#6
+class Grape::Entity::Exposure::DelegatorExposure < ::Grape::Entity::Exposure::Base
+  # source://grape-entity//lib/grape_entity/exposure/delegator_exposure.rb#7
+  def value(entity, _options); end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/formatter_block_exposure.rb#6
+class Grape::Entity::Exposure::FormatterBlockExposure < ::Grape::Entity::Exposure::Base
+  # source://grape-entity//lib/grape_entity/exposure/formatter_block_exposure.rb#17
+  def ==(other); end
+
+  # source://grape-entity//lib/grape_entity/exposure/formatter_block_exposure.rb#13
+  def dup; end
+
+  # Returns the value of attribute format_with.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/formatter_block_exposure.rb#7
+  def format_with; end
+
+  # source://grape-entity//lib/grape_entity/exposure/formatter_block_exposure.rb#9
+  def setup(&format_with); end
+
+  # source://grape-entity//lib/grape_entity/exposure/formatter_block_exposure.rb#21
+  def value(entity, _options); end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/formatter_exposure.rb#6
+class Grape::Entity::Exposure::FormatterExposure < ::Grape::Entity::Exposure::Base
+  # source://grape-entity//lib/grape_entity/exposure/formatter_exposure.rb#17
+  def ==(other); end
+
+  # source://grape-entity//lib/grape_entity/exposure/formatter_exposure.rb#13
+  def dup_args; end
+
+  # Returns the value of attribute format_with.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/formatter_exposure.rb#7
+  def format_with; end
+
+  # source://grape-entity//lib/grape_entity/exposure/formatter_exposure.rb#9
+  def setup(format_with); end
+
+  # source://grape-entity//lib/grape_entity/exposure/formatter_exposure.rb#21
+  def value(entity, _options); end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#6
+class Grape::Entity::Exposure::NestingExposure < ::Grape::Entity::Exposure::Base
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#17
+  def ==(other); end
+
+  # if we have any nesting exposures with the same name.
+  # delegate :deep_complex_nesting?(entity), to: :nested_exposures
+  #
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#59
+  def deep_complex_nesting?(entity); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#13
+  def dup_args; end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#25
+  def find_nested_exposure(attribute); end
+
+  # Returns the value of attribute nested_exposures.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#7
+  def nested_exposures; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#21
+  def nesting?; end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#39
+  def serializable_value(entity, options); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#9
+  def setup(nested_exposures = T.unsafe(nil)); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#29
+  def valid?(entity); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#45
+  def valid_value_for(key, entity, options); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#33
+  def value(entity, options); end
+
+  private
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#73
+  def easy_normalized_exposures(entity, options); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#116
+  def map_entity_exposures(entity, options); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#65
+  def nesting_options_for(options); end
+
+  # This method 'merges' subsequent nesting exposures with the same name if it's needed
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure.rb#82
+  def normalized_exposures(entity, options); end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#7
+class Grape::Entity::Exposure::NestingExposure::NestedExposures
+  include ::Enumerable
+
+  # @return [NestedExposures] a new instance of NestedExposures
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#10
+  def initialize(exposures); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#23
+  def <<(exposure); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def ==(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def [](*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def all?(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#34
+  def clear; end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def count(*args, &block); end
+
+  # Determine if we have any nesting exposures with the same name.
+  #
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#62
+  def deep_complex_nesting?(entity); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#28
+  def delete_by(*attributes); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def each(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def each_with_object(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def empty?(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#15
+  def find_by(attribute); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def length(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def select(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#19
+  def select_by(attribute); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def size(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def to_a(*args, &block); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#54
+  def to_ary(*args, &block); end
+
+  private
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/nested_exposures.rb#76
+  def reset_memoization!; end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#7
+class Grape::Entity::Exposure::NestingExposure::OutputBuilder < ::SimpleDelegator
+  # @return [OutputBuilder] a new instance of OutputBuilder
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#8
+  def initialize(entity); end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#36
+  def __getobj__; end
+
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#16
+  def add(exposure, result); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#31
+  def is_a?(klass); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#31
+  def kind_of?(klass); end
+
+  private
+
+  # In case if we want to solve collisions providing lambda to :merge option
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#55
+  def merge_strategy(for_merge); end
+
+  # If output_collection contains at least one element we have to represent the output as a collection
+  #
+  # source://grape-entity//lib/grape_entity/exposure/nesting_exposure/output_builder.rb#43
+  def output; end
+end
+
+# source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#6
+class Grape::Entity::Exposure::RepresentExposure < ::Grape::Entity::Exposure::Base
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#19
+  def ==(other); end
+
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#15
+  def dup_args; end
+
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#9
+  def setup(using_class_name, subexposure); end
+
+  # Returns the value of attribute subexposure.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#7
+  def subexposure; end
+
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#34
+  def using_class; end
+
+  # Returns the value of attribute using_class_name.
+  #
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#7
+  def using_class_name; end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#30
+  def valid?(entity); end
+
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#25
+  def value(entity, options); end
+
+  private
+
+  # source://grape-entity//lib/grape_entity/exposure/represent_exposure.rb#44
+  def using_options_for(options); end
+end
+
+# All supported options.
+#
+# source://grape-entity//lib/grape_entity/entity.rb#570
+Grape::Entity::OPTIONS = T.let(T.unsafe(nil), Set)
+
+# source://grape-entity//lib/grape_entity/options.rb#7
+class Grape::Entity::Options
+  extend ::Forwardable
+
+  # @return [Options] a new instance of Options
+  #
+  # source://grape-entity//lib/grape_entity/options.rb#14
+  def initialize(opts_hash = T.unsafe(nil)); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#46
+  def ==(other); end
+
+  # source://forwardable/1.3.3/forwardable.rb#231
+  def [](*args, **_arg1, &block); end
+
+  # source://forwardable/1.3.3/forwardable.rb#231
+  def dig(*args, **_arg1, &block); end
+
+  # source://forwardable/1.3.3/forwardable.rb#231
+  def empty?(*args, **_arg1, &block); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#75
+  def except_fields(for_key = T.unsafe(nil)); end
+
+  # source://forwardable/1.3.3/forwardable.rb#231
+  def fetch(*args, **_arg1, &block); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#61
+  def for_nesting(key); end
+
+  # source://forwardable/1.3.3/forwardable.rb#231
+  def key?(*args, **_arg1, &block); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#22
+  def merge(new_opts); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#65
+  def only_fields(for_key = T.unsafe(nil)); end
+
+  # Returns the value of attribute opts_hash.
+  #
+  # source://grape-entity//lib/grape_entity/options.rb#10
+  def opts_hash; end
+
+  # source://grape-entity//lib/grape_entity/options.rb#34
+  def reverse_merge(new_opts); end
+
+  # @return [Boolean]
+  #
+  # source://grape-entity//lib/grape_entity/options.rb#51
+  def should_return_key?(key); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#85
+  def with_attr_path(part); end
+
+  private
+
+  # source://grape-entity//lib/grape_entity/options.rb#97
+  def build_for_nesting(key); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#108
+  def build_symbolized_hash(attribute, hash); end
+
+  # source://grape-entity//lib/grape_entity/options.rb#123
+  def only_for_given(key, fields); end
+end
+
+# source://grape-entity//lib/grape_entity/version.rb#3
+module GrapeEntity; end
+
+# source://grape-entity//lib/grape_entity/version.rb#4
+GrapeEntity::VERSION = T.let(T.unsafe(nil), String)
diff --git a/sorbet/rbi/gems/multi_json@1.15.0.rbi b/sorbet/rbi/gems/multi_json@1.15.0.rbi
new file mode 100644
index 0000000..64c3c0c
--- /dev/null
+++ b/sorbet/rbi/gems/multi_json@1.15.0.rbi
@@ -0,0 +1,268 @@
+# typed: true
+
+# DO NOT EDIT MANUALLY
+# This is an autogenerated file for types exported from the `multi_json` gem.
+# Please instead update this file by running `bin/tapioca gem multi_json`.
+
+
+# source://multi_json//lib/multi_json/options.rb#1
+module MultiJson
+  include ::MultiJson::Options
+  extend ::MultiJson::Options
+  extend ::MultiJson
+
+  # Get the current adapter class.
+  #
+  # source://multi_json//lib/multi_json.rb#70
+  def adapter; end
+
+  # Set the JSON parser utilizing a symbol, string, or class.
+  # Supported by default are:
+  #
+  # * <tt>:oj</tt>
+  # * <tt>:json_gem</tt>
+  # * <tt>:json_pure</tt>
+  # * <tt>:ok_json</tt>
+  # * <tt>:yajl</tt>
+  # * <tt>:nsjsonserialization</tt> (MacRuby only)
+  # * <tt>:gson</tt> (JRuby only)
+  # * <tt>:jr_jackson</tt> (JRuby only)
+  #
+  # source://multi_json//lib/multi_json.rb#90
+  def adapter=(new_adapter); end
+
+  # source://multi_json//lib/multi_json.rb#26
+  def cached_options(*_arg0); end
+
+  # source://multi_json//lib/multi_json.rb#129
+  def current_adapter(options = T.unsafe(nil)); end
+
+  # Decode a JSON string into Ruby.
+  #
+  # <b>Options</b>
+  #
+  # <tt>:symbolize_keys</tt> :: If true, will use symbols instead of strings for the keys.
+  # <tt>:adapter</tt> :: If set, the selected adapter will be used for this call.
+  #
+  # source://multi_json//lib/multi_json.rb#119
+  def decode(string, options = T.unsafe(nil)); end
+
+  # The default adapter based on what you currently
+  # have loaded and installed. First checks to see
+  # if any adapters are already loaded, then checks
+  # to see which are installed if none are loaded.
+  #
+  # source://multi_json//lib/multi_json.rb#46
+  def default_adapter; end
+
+  # The default adapter based on what you currently
+  # have loaded and installed. First checks to see
+  # if any adapters are already loaded, then checks
+  # to see which are installed if none are loaded.
+  #
+  # source://multi_json//lib/multi_json.rb#46
+  def default_engine; end
+
+  # source://multi_json//lib/multi_json.rb#18
+  def default_options; end
+
+  # source://multi_json//lib/multi_json.rb#11
+  def default_options=(value); end
+
+  # Encodes a Ruby object as JSON.
+  #
+  # source://multi_json//lib/multi_json.rb#138
+  def dump(object, options = T.unsafe(nil)); end
+
+  # Encodes a Ruby object as JSON.
+  #
+  # source://multi_json//lib/multi_json.rb#138
+  def encode(object, options = T.unsafe(nil)); end
+
+  # Get the current adapter class.
+  #
+  # source://multi_json//lib/multi_json.rb#70
+  def engine; end
+
+  # Set the JSON parser utilizing a symbol, string, or class.
+  # Supported by default are:
+  #
+  # * <tt>:oj</tt>
+  # * <tt>:json_gem</tt>
+  # * <tt>:json_pure</tt>
+  # * <tt>:ok_json</tt>
+  # * <tt>:yajl</tt>
+  # * <tt>:nsjsonserialization</tt> (MacRuby only)
+  # * <tt>:gson</tt> (JRuby only)
+  # * <tt>:jr_jackson</tt> (JRuby only)
+  #
+  # source://multi_json//lib/multi_json.rb#90
+  def engine=(new_adapter); end
+
+  # Decode a JSON string into Ruby.
+  #
+  # <b>Options</b>
+  #
+  # <tt>:symbolize_keys</tt> :: If true, will use symbols instead of strings for the keys.
+  # <tt>:adapter</tt> :: If set, the selected adapter will be used for this call.
+  #
+  # source://multi_json//lib/multi_json.rb#119
+  def load(string, options = T.unsafe(nil)); end
+
+  # source://multi_json//lib/multi_json.rb#98
+  def load_adapter(new_adapter); end
+
+  # source://multi_json//lib/multi_json.rb#26
+  def reset_cached_options!(*_arg0); end
+
+  # Set the JSON parser utilizing a symbol, string, or class.
+  # Supported by default are:
+  #
+  # * <tt>:oj</tt>
+  # * <tt>:json_gem</tt>
+  # * <tt>:json_pure</tt>
+  # * <tt>:ok_json</tt>
+  # * <tt>:yajl</tt>
+  # * <tt>:nsjsonserialization</tt> (MacRuby only)
+  # * <tt>:gson</tt> (JRuby only)
+  # * <tt>:jr_jackson</tt> (JRuby only)
+  #
+  # source://multi_json//lib/multi_json.rb#90
+  def use(new_adapter); end
+
+  # Executes passed block using specified adapter.
+  #
+  # source://multi_json//lib/multi_json.rb#144
+  def with_adapter(new_adapter); end
+
+  # Executes passed block using specified adapter.
+  #
+  # source://multi_json//lib/multi_json.rb#144
+  def with_engine(new_adapter); end
+
+  private
+
+  # source://multi_json//lib/multi_json.rb#155
+  def load_adapter_from_string_name(name); end
+end
+
+# source://multi_json//lib/multi_json.rb#31
+MultiJson::ALIASES = T.let(T.unsafe(nil), Hash)
+
+# source://multi_json//lib/multi_json/adapter_error.rb#2
+class MultiJson::AdapterError < ::ArgumentError
+  # Returns the value of attribute cause.
+  #
+  # source://multi_json//lib/multi_json/adapter_error.rb#3
+  def cause; end
+
+  class << self
+    # source://multi_json//lib/multi_json/adapter_error.rb#5
+    def build(original_exception); end
+  end
+end
+
+# Legacy support
+#
+# source://multi_json//lib/multi_json/parse_error.rb#16
+MultiJson::DecodeError = MultiJson::ParseError
+
+# source://multi_json//lib/multi_json/parse_error.rb#16
+MultiJson::LoadError = MultiJson::ParseError
+
+# source://multi_json//lib/multi_json/options.rb#2
+module MultiJson::Options
+  # source://multi_json//lib/multi_json/options.rb#25
+  def default_dump_options; end
+
+  # source://multi_json//lib/multi_json/options.rb#21
+  def default_load_options; end
+
+  # source://multi_json//lib/multi_json/options.rb#17
+  def dump_options(*args); end
+
+  # source://multi_json//lib/multi_json/options.rb#8
+  def dump_options=(options); end
+
+  # source://multi_json//lib/multi_json/options.rb#13
+  def load_options(*args); end
+
+  # source://multi_json//lib/multi_json/options.rb#3
+  def load_options=(options); end
+
+  private
+
+  # source://multi_json//lib/multi_json/options.rb#31
+  def get_options(options, *args); end
+end
+
+# source://multi_json//lib/multi_json/options_cache.rb#2
+module MultiJson::OptionsCache
+  extend ::MultiJson::OptionsCache
+
+  # source://multi_json//lib/multi_json/options_cache.rb#10
+  def fetch(type, key, &block); end
+
+  # source://multi_json//lib/multi_json/options_cache.rb#5
+  def reset; end
+
+  private
+
+  # source://multi_json//lib/multi_json/options_cache.rb#24
+  def write(cache, key); end
+end
+
+# Normally MultiJson is used with a few option sets for both dump/load
+# methods. When options are generated dynamically though, every call would
+# cause a cache miss and the cache would grow indefinitely. To prevent
+# this, we just reset the cache every time the number of keys outgrows
+# 1000.
+#
+# source://multi_json//lib/multi_json/options_cache.rb#22
+MultiJson::OptionsCache::MAX_CACHE_SIZE = T.let(T.unsafe(nil), Integer)
+
+# source://multi_json//lib/multi_json/parse_error.rb#2
+class MultiJson::ParseError < ::StandardError
+  # Returns the value of attribute cause.
+  #
+  # source://multi_json//lib/multi_json/parse_error.rb#3
+  def cause; end
+
+  # Returns the value of attribute data.
+  #
+  # source://multi_json//lib/multi_json/parse_error.rb#3
+  def data; end
+
+  class << self
+    # source://multi_json//lib/multi_json/parse_error.rb#5
+    def build(original_exception, data); end
+  end
+end
+
+# source://multi_json//lib/multi_json.rb#33
+MultiJson::REQUIREMENT_MAP = T.let(T.unsafe(nil), Array)
+
+# source://multi_json//lib/multi_json/version.rb#16
+MultiJson::VERSION = T.let(T.unsafe(nil), String)
+
+# source://multi_json//lib/multi_json/version.rb#2
+class MultiJson::Version
+  class << self
+    # @return [String]
+    #
+    # source://multi_json//lib/multi_json/version.rb#10
+    def to_s; end
+  end
+end
+
+# source://multi_json//lib/multi_json/version.rb#3
+MultiJson::Version::MAJOR = T.let(T.unsafe(nil), Integer)
+
+# source://multi_json//lib/multi_json/version.rb#4
+MultiJson::Version::MINOR = T.let(T.unsafe(nil), Integer)
+
+# source://multi_json//lib/multi_json/version.rb#5
+MultiJson::Version::PATCH = T.let(T.unsafe(nil), Integer)
+
+# source://multi_json//lib/multi_json/version.rb#6
+MultiJson::Version::PRE = T.let(T.unsafe(nil), T.untyped)
diff --git a/spec/grape_entity/entity_spec.rb b/spec/grape_entity/entity_spec.rb
new file mode 100644
index 0000000..3e56788
--- /dev/null
+++ b/spec/grape_entity/entity_spec.rb
@@ -0,0 +1,53 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "spec_helper"
+
+module Grape
+  class EntitySpec < Minitest::Spec
+    describe "Grape::Entity" do
+      before do
+        @fresh_class = T.let(
+          T.unsafe(Class).new(Grape::Entity),
+          T.all(T.class_of(Grape::Entity), GrapeSorbet::GrapeEntityName),
+        )
+      end
+
+      describe "class methods" do
+        describe ".entity_name" do
+          it "returns the custom entity name if one has been set" do
+            @fresh_class.entity_name = "CustomEntityName"
+            assert_equal("CustomEntityName", @fresh_class.entity_name)
+          end
+
+          it "raises an error if no custom entity name has been set" do
+            e = assert_raises(StandardError) { @fresh_class.entity_name }
+            assert_match(/entity_name has not been set/, e.message)
+          end
+        end
+
+        describe ".entity_name=" do
+          it "sets the entity name" do
+            refute(@fresh_class.instance_variable_defined?(:@entity_name))
+
+            @fresh_class.entity_name = "CustomEntityName"
+
+            assert(@fresh_class.instance_variable_defined?(:@entity_name))
+            assert_equal("CustomEntityName", @fresh_class.instance_variable_get(:@entity_name))
+          end
+        end
+
+        describe ".respond_to?" do
+          it "returns true for entity_name if a custom entity name has been set" do
+            @fresh_class.entity_name = "CustomEntityName"
+            assert(@fresh_class.respond_to?(:entity_name))
+          end
+
+          it "returns false for entity_name if no custom entity name has been set" do
+            refute(@fresh_class.respond_to?(:entity_name))
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 7c04cdd..7e1fc23 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,8 @@
 # typed: strict
 # frozen_string_literal: true
 
+require "grape_sorbet"
+
 require "tapioca/internal"
 require "minitest/autorun"
 require "minitest/spec"