[2.0] OpenAPI Annotation Attributes

[Tiberriver256]

Feature

As a developer making a RESTier API I would like automated OData annotations so that my API consumers can more easily use the API

Scenario:
Given the Id property of an entity is designated with the [Key] attribute
When the $metadata is called
Then the property should have the computed=true attribute

For a nice list of properties that are pretty common / standard check out the annotations that the odata to openapi conversion tool supports:
https://github.com/oasis-tcs/odata-openapi/blob/master/doc/Annotations.md

Starting with adding support for the computed and the description attribute would be sufficient for most scenarios

[robertmclaws]

Let's research how Microsoft's OData to OpenAPI library works and see if we can't add the ability to add attributes to your model and have them automatically show up in the metadata for OpenAPI.