diff --git a/structure/main.ts b/structure/main.ts
index 3c23d7a1..3db9c135 100644
--- a/structure/main.ts
+++ b/structure/main.ts
@@ -8906,240 +8906,6 @@ export type AddonModBookViewBookWSResponse = {
     warnings?: CoreWSExternalWarning[];
 };
 
-/**
- * Params of mod_chat_get_chat_latest_messages WS.
- *
- * WS Description: Get the latest messages from the given chat session.
- */
-type AddonModChatGetChatLatestMessagesWSParams = {
-    chatsid: string; // Chat session id (obtained via mod_chat_login_user).
-    chatlasttime?: number; // Last time messages were retrieved (epoch time).
-};
-
-/**
- * Data returned by mod_chat_get_chat_latest_messages WS.
- *
- * WS Description: Get the latest messages from the given chat session.
- */
-export type AddonModChatGetChatLatestMessagesWSResponse = {
-    messages: { // List of users.
-        id: number; // Message id.
-        userid: number; // User id.
-        system: boolean; // True if is a system message (like user joined).
-        message: string; // Message text.
-        timestamp: number; // Timestamp for the message.
-    }[];
-    chatnewlasttime: number; // New last time.
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_get_chats_by_courses WS.
- *
- * WS Description: Returns a list of chat instances in a provided set of courses,
-                            if no courses are provided then all the chat instances the user has access to will be returned.
- */
-type AddonModChatGetChatsByCoursesWSParams = {
-    courseids?: number[]; // Array of course ids.
-};
-
-/**
- * Data returned by mod_chat_get_chats_by_courses WS.
- *
- * WS Description: Returns a list of chat instances in a provided set of courses,
-                            if no courses are provided then all the chat instances the user has access to will be returned.
- */
-export type AddonModChatGetChatsByCoursesWSResponse = {
-    chats: {
-        id: number; // Activity instance id.
-        coursemodule: number; // Course module id.
-        course: number; // Course id.
-        name: string; // Activity name.
-        intro: string; // Activity introduction.
-        introformat: number; // Intro format (1 = HTML, 0 = MOODLE, 2 = PLAIN, or 4 = MARKDOWN).
-        introfiles?: CoreWSExternalFile[];
-        section?: number; // Course section id.
-        visible?: boolean; // Visible.
-        groupmode?: number; // Group mode.
-        groupingid?: number; // Group id.
-        lang?: string; // Forced activity language.
-        chatmethod?: string; // Chat method (sockets, ajax, header_js).
-        keepdays?: number; // Keep days.
-        studentlogs?: number; // Student logs visible to everyone.
-        chattime?: number; // Chat time.
-        schedule?: number; // Schedule type.
-        timemodified?: number; // Time of last modification.
-    }[];
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_get_chat_users WS.
- *
- * WS Description: Get the list of users in the given chat session.
- */
-type AddonModChatGetChatUsersWSParams = {
-    chatsid: string; // Chat session id (obtained via mod_chat_login_user).
-};
-
-/**
- * Data returned by mod_chat_get_chat_users WS.
- *
- * WS Description: Get the list of users in the given chat session.
- */
-export type AddonModChatGetChatUsersWSResponse = {
-    users: { // List of users.
-        id: number; // User id.
-        fullname: string; // User full name.
-        profileimageurl: string; // User picture URL.
-    }[];
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_get_session_messages WS.
- *
- * WS Description: Retrieves messages of the given chat session.
- */
-type AddonModChatGetSessionMessagesWSParams = {
-    chatid: number; // Chat instance id.
-    sessionstart: number; // The session start time (timestamp).
-    sessionend: number; // The session end time (timestamp).
-    groupid?: number; // Get messages from users in this group.
-                                             // 0 means that the function will determine the user group.
-
-};
-
-/**
- * Data returned by mod_chat_get_session_messages WS.
- *
- * WS Description: Retrieves messages of the given chat session.
- */
-export type AddonModChatGetSessionMessagesWSResponse = {
-    messages: {
-        id: number; // The message record id.
-        chatid: number; // The chat id.
-        userid: number; // The user who wrote the message.
-        groupid: number; // The group this message belongs to.
-        issystem: boolean; // Whether is a system message or not.
-        message: string; // The message text.
-        timestamp: number; // The message timestamp (indicates when the message was sent).
-    }[];
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_get_sessions WS.
- *
- * WS Description: Retrieves chat sessions for a given chat.
- */
-type AddonModChatGetSessionsWSParams = {
-    chatid: number; // Chat instance id.
-    groupid?: number; // Get messages from users in this group.
-                                             // 0 means that the function will determine the user group.
-
-    showall?: boolean; // Whether to show completed sessions or not.
-};
-
-/**
- * Data returned by mod_chat_get_sessions WS.
- *
- * WS Description: Retrieves chat sessions for a given chat.
- */
-export type AddonModChatGetSessionsWSResponse = {
-    sessions: { // List of users.
-        sessionstart: number; // Session start time.
-        sessionend: number; // Session end time.
-        sessionusers: { // Session users.
-            userid: number; // User id.
-            messagecount: number; // Number of messages in the session.
-        }[];
-        iscomplete: boolean; // Whether the session is completed or not.
-    }[];
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_login_user WS.
- *
- * WS Description: Log a user into a chat room in the given chat.
- */
-type AddonModChatLoginUserWSParams = {
-    chatid: number; // Chat instance id.
-    groupid?: number; // Group id, 0 means that the function will determine the user group.
-};
-
-/**
- * Data returned by mod_chat_login_user WS.
- *
- * WS Description: Log a user into a chat room in the given chat.
- */
-export type AddonModChatLoginUserWSResponse = {
-    chatsid: string; // Unique chat session id.
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_send_chat_message WS.
- *
- * WS Description: Send a message on the given chat session.
- */
-type AddonModChatSendChatMessageWSParams = {
-    chatsid: string; // Chat session id (obtained via mod_chat_login_user).
-    messagetext: string; // The message text.
-    beepid?: string; // The beep id.
-};
-
-/**
- * Data returned by mod_chat_send_chat_message WS.
- *
- * WS Description: Send a message on the given chat session.
- */
-export type AddonModChatSendChatMessageWSResponse = {
-    messageid: number; // Message sent id.
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_view_chat WS.
- *
- * WS Description: Trigger the course module viewed event and update the module completion status.
- */
-type AddonModChatViewChatWSParams = {
-    chatid: number; // Chat instance id.
-};
-
-/**
- * Data returned by mod_chat_view_chat WS.
- *
- * WS Description: Trigger the course module viewed event and update the module completion status.
- */
-export type AddonModChatViewChatWSResponse = {
-    status: boolean; // Status: true if success.
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_chat_view_sessions WS.
- *
- * WS Description: Trigger the chat session viewed event.
- */
-type AddonModChatViewSessionsWSParams = {
-    cmid: number; // Course module id.
-    start?: number; // Session start time.
-    end?: number; // Session end time.
-};
-
-/**
- * Data returned by mod_chat_view_sessions WS.
- *
- * WS Description: Trigger the chat session viewed event.
- */
-export type AddonModChatViewSessionsWSResponse = {
-    status: boolean; // Status: true if success.
-    warnings?: CoreWSExternalWarning[];
-};
-
 /**
  * Params of mod_choice_delete_choice_responses WS.
  *
@@ -14940,116 +14706,6 @@ export type AddonModScormViewScormWSResponse = {
     warnings?: CoreWSExternalWarning[];
 };
 
-/**
- * Params of mod_survey_get_questions WS.
- *
- * WS Description: Get the complete list of questions for the survey, including subquestions.
- */
-type AddonModSurveyGetQuestionsWSParams = {
-    surveyid: number; // Survey instance id.
-};
-
-/**
- * Data returned by mod_survey_get_questions WS.
- *
- * WS Description: Get the complete list of questions for the survey, including subquestions.
- */
-export type AddonModSurveyGetQuestionsWSResponse = {
-    questions: {
-        id: number; // Question id.
-        text: string; // Question text.
-        shorttext: string; // Question short text.
-        multi: string; // Subquestions ids.
-        intro: string; // The question intro.
-        type: number; // Question type.
-        options: string; // Question options.
-        parent: number; // Parent question (for subquestions).
-    }[];
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_survey_get_surveys_by_courses WS.
- *
- * WS Description: Returns a list of survey instances in a provided set of courses,
-                            if no courses are provided then all the survey instances the user has access to will be returned.
- */
-type AddonModSurveyGetSurveysByCoursesWSParams = {
-    courseids?: number[]; // Array of course ids.
-};
-
-/**
- * Data returned by mod_survey_get_surveys_by_courses WS.
- *
- * WS Description: Returns a list of survey instances in a provided set of courses,
-                            if no courses are provided then all the survey instances the user has access to will be returned.
- */
-export type AddonModSurveyGetSurveysByCoursesWSResponse = {
-    surveys: {
-        id: number; // Activity instance id.
-        coursemodule: number; // Course module id.
-        course: number; // Course id.
-        name: string; // Activity name.
-        intro?: string; // Activity introduction.
-        introformat?: number; // Intro format (1 = HTML, 0 = MOODLE, 2 = PLAIN, or 4 = MARKDOWN).
-        introfiles?: CoreWSExternalFile[];
-        section?: number; // Course section id.
-        visible?: boolean; // Visible.
-        groupmode?: number; // Group mode.
-        groupingid?: number; // Group id.
-        lang?: string; // Forced activity language.
-        template?: number; // Survey type.
-        days?: number; // Days.
-        questions?: string; // Question ids.
-        surveydone?: number; // Did I finish the survey?.
-        timecreated?: number; // Time of creation.
-        timemodified?: number; // Time of last modification.
-    }[];
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_survey_submit_answers WS.
- *
- * WS Description: Submit the answers for a given survey.
- */
-type AddonModSurveySubmitAnswersWSParams = {
-    surveyid: number; // Survey id.
-    answers: {
-        key: string; // Answer key.
-        value: string; // Answer value.
-    }[];
-};
-
-/**
- * Data returned by mod_survey_submit_answers WS.
- *
- * WS Description: Submit the answers for a given survey.
- */
-export type AddonModSurveySubmitAnswersWSResponse = {
-    status: boolean; // Status: true if success.
-    warnings?: CoreWSExternalWarning[];
-};
-
-/**
- * Params of mod_survey_view_survey WS.
- *
- * WS Description: Trigger the course module viewed event and update the module completion status.
- */
-type AddonModSurveyViewSurveyWSParams = {
-    surveyid: number; // Survey instance id.
-};
-
-/**
- * Data returned by mod_survey_view_survey WS.
- *
- * WS Description: Trigger the course module viewed event and update the module completion status.
- */
-export type AddonModSurveyViewSurveyWSResponse = {
-    status: boolean; // Status: true if success.
-    warnings?: CoreWSExternalWarning[];
-};
-
 /**
  * Params of mod_url_get_urls_by_courses WS.
  *