parameters: (self)
return_statement: return [self.key]
docstring: See 'FeatureColumn` base class.
docstring_summary: See 'FeatureColumn` base class.
docstring_tokens: See FeatureColumn base class .
function: def parents(self):
      """See 'FeatureColumn` base class."""
      return [self.key]
function_tokens: def parents ( self ) : return [ self . key ]