code: def __insert_action(self, revision):
          
  
          revision["patch"]["_id"] = ObjectId(revision.get("master_id"))
  
          insert_response = yield self.collection.insert(revision.get("patch"))
  
          if not isinstance(insert_response, str):
              raise DocumentRevisionInsertFailed()
docs: Handle the insert action type.
  
          Creates new document to be created in this collection.
          This allows you to stage a creation of an object
  
          :param dict revision: The revision dictionary