docs: def is_owner(self, user):
          """
          Checks if user is the owner of object
  
          Parameters
          ----------
          user: get_user_model() instance
  
          Returns
          -------
          bool
  
          Author
          ------
          Himanshu Shankar (https://himanshus.com)
          """
          if user.is_authenticated:
              return self.created_by.id == user.id
          return False