Implemented the GET /users/{username}/collection/folders/{folder_id}/releases endpoint for the Open API specification document in the library target.

Sources/DiscogsService/openapi.yaml

@@ -1247,17 +1247,65 @@ paths:
     get:
       tags:
         - User Collection
-      summary: Get information about collection folders of a user that contains a given release.
+      summary: Get collection items of a user that contains a given release.
       description: |
         Views those collection folder of a user which contain a specified release. This will also show information about each release instance.
 
         > important: A given `release_id` must not be `0`.
 
         This endpoint requires authentication as the collection owner only in case the collection is private.
-      operationId: getCollectionRelease
+      operationId: getCollectionItemsByRelease
       parameters:
         - $ref: '#/components/parameters/Username'
         - $ref: '#/components/parameters/ReleaseId'
+      responses:
+        '200':
+          description: Successfully retrieved a list of collection items that contains a specified release. 
+          headers:
+            X-Discogs-RateLimit:
+              $ref: '#/components/headers/RateLimit'
+            X-Discogs-RateLimit-Used:
+              $ref: '#/components/headers/RateLimitUsed'
+            X-Discogs-RateLimit-Remaining:
+              $ref: '#/components/headers/RateLimitRemaining'
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  pagination:
+                    $ref: '#/components/schemas/Pagination'
+                  releases:
+                    description: A list of collection folders of a user that contains a specified release.
+                    type: array
+                    items:
+                      $ref: '#/components/schemas/ReleaseInFolder'
+                required:
+                  - pagination
+                  - releases
+        '403':
+          $ref: '#/components/responses/NotAccessable'          
+        '404':
+          $ref: '#/components/responses/NotFound'
+        '500':
+          $ref: '#/components/responses/InternalError'
+  /users/{username}/collection/folders/{folder_id}/releases:
+    get:
+      tags:
+        - User Collection
+      summary: Get collection items of a user inside a specified folder.
+      description: |
+        Returns the list of item in a specified collection folder of a user.
+        
+        Basic information about each release is provided, suitable for display in a list. For detailed information, make another API call to fetch the corresponding release.
+        
+        This endpoint provides pagination parameters and also, requires authentication as an owner of a collection only in case the `folder_id` is not `0`, or the collection has been made private by its owner. Otherwise, only public notes fields will be visible.
+      operationId: getCollectionItemsByFolder
+      parameters:
+        - $ref: '#/components/parameters/Username'
+        - $ref: '#/components/parameters/FolderId'
+        - $ref: '#/components/parameters/SortField'
+        - $ref: '#/components/parameters/SortOrder'
       responses:
         '200':
           description: Successfully retrieved a specific collection folder of a 
@@ -1276,7 +1324,7 @@ paths:
                   pagination:
                     $ref: '#/components/schemas/Pagination'
                   releases:
-                    description: A list of collection folders of a user that contains a specified release.
+                    description: A list of collection folders of a user that contains a 
                     type: array
                     items:
                       $ref: '#/components/schemas/ReleaseInFolder'
@@ -2258,6 +2306,23 @@ components:
         basic_information:
           description: The available information about a release that was added into a collection folder of a user.
           $ref: '#/components/schemas/Release'
+        notes: 
+          description: A list of additional notes related to a release in a collection folder of a user.
+          type: array
+          items:
+            description: A type that represents a note about a release in a collection folder of a user.
+            type: object
+            properties:
+              field_id:
+                description: An identifier of a custom field.
+                type: integer
+                readOnly: true
+              value:
+                description: A value assigned to a custom field.
+                type: string
+            required:
+              - field_id
+              - value
       required:
         - basic_information
         - id