Adding a test YAML docstring section to see what Swagger will do with it.

lms/djangoapps/course_api/views.py

@@ -187,6 +187,36 @@ class CourseListView(DeveloperErrorViewMixin, ListAPIView):
                 "start_type": "timestamp"
               }
             ]
+
+    ---
+
+    # YAML
+
+    omit_serializer: true
+
+    parameters:
+        - name: mobile
+          description: If specified, only visible `CourseOverview`
+            objects that are designated as mobile_available are returned.
+          required: false
+          type: string
+          paramType: query
+        - name: org
+          description: If specified, visible `CourseOverview` objects are filtered
+            such that only those belonging to the organization with the
+            provided org code (e.g., "HarvardX") are returned.
+            Case-insensitive.
+          required: false
+          type: string
+          paramType: query
+        - name: username
+          description: The username of the specified user whose visible courses we
+            want to see. The username is not required only if the API is
+            requested by an Anonymous user.
+          required: false
+          type: string
+          paramType: query
+
     """
 
     pagination_class = NamespacedPageNumberPagination