Implemented the GET /marketplace/fee/{price} endpoint for the Open API specification document in the library target.

Sources/DiscogsService/openapi.yaml

@@ -2204,6 +2204,41 @@ paths:
           $ref: '#/components/responses/NotFound'
         '500':
           $ref: '#/components/responses/InternalError'
+  /marketplace/fee/{price}:
+    get:
+      tags:
+        - Marketplace
+      summary: Get an estimated fee for selling an item in a marketplace.
+      description: |
+        Calculates an estimated fee for selling an item in a marketplace.
+
+        This endpoints requires authentication.
+      operationId: getFee
+      parameters:
+        - $ref: '#/components/parameters/Price'
+      security:
+        - ConsumerKeySecret: []
+        - UserToken: []
+        - OAuth: []
+      responses:
+        '200':
+          description: Successfully retrieves an estimated fee for selling an item in a marketplace.
+          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:
+                description: An estimated fee in a default currency.
+                $ref: '#/components/schemas/Price'
+        '401':
+          $ref: '#/components/responses/Unauthorized'
+        '500':
+          $ref: '#/components/responses/InternalError'
 components:
   headers:
     Link:
@@ -2488,6 +2523,15 @@ components:
         type: integer
         minimum: 1
         maximum: 100
+    Price:
+      description: A number for a price of a release.
+      name: price
+      in: path
+      required: true
+      schema:
+        type: number
+        format: float
+        minimum: 0
     Profile:
       description: A biographical information about a user.
       name: profile