add docstring for ProductBackOffice.

apps/product/views/back.py

@@ -86,7 +86,29 @@ class ProductBackOfficeGalleryListView(ProductBackOfficeMixinView,
 
 class ProductDetailBackOfficeView(ProductBackOfficeMixinView,
                                   generics.RetrieveUpdateDestroyAPIView):
-    """Product back-office R/U/D view."""
+    """
+    Product back-office R/U/D view.
+
+    **GET**
+    ```
+    Implement getting ProductBackOffice object.
+    ```
+
+    **PUT**
+    ```
+    Implement updating ProductBackOffice.
+    ```
+
+    **PATCH**
+    ```
+    Implement partial updating ProductBackOffice.
+    ```
+
+    **DELETE**
+    ```
+    Implement deleting ProductBackOffice.
+    ```
+    """
     serializer_class = serializers.ProductBackOfficeDetailSerializer
 
 
@@ -161,6 +183,9 @@ class ProductTypeTagCategoryCreateBackOfficeView(ProductTypeBackOfficeMixinView,
     serializer_class = serializers.ProductTypeTagCategorySerializer
 
     def create(self, request, *args, **kwargs):
+        """
+        Implement creating ProductTypeTagCategory.
+        """
         super().create(request, *args, **kwargs)
         return Response(status=status.HTTP_201_CREATED)