parameters: (cls, user_id)
return_statement: return cls.token_model.create(user_id, 'auth').token
docstring: Creates a new authorization token for a given user ID.
  
          :param user_id:
              User unique ID.
          :returns:
              A string with the authorization token.
docstring_summary: Creates a new authorization token for a given user ID.
docstring_tokens: Creates a new authorization token for a given user ID .
function: def create_auth_token(cls, user_id):
          """Creates a new authorization token for a given user ID.
  
          :param user_id:
              User unique ID.
          :returns:
              A string with the authorization token.
          """
          return cls.token_model.create(user_id, 'auth').token
function_tokens: def create_auth_token ( cls , user_id ) : return cls . token_model . create ( user_id , 'auth' ) . token