def _update_metadata(self):
        """
        Updates the metadata of the stored routine.
        """
        self._pystratum_metadata['routine_name'] = self._routine_name
        self._pystratum_metadata['designation'] = self._designation_type
        self._pystratum_metadata['table_name'] = self._table_name
        self._pystratum_metadata['parameters'] = self._parameters
        self._pystratum_metadata['columns'] = self._columns
        self._pystratum_metadata['fields'] = self._fields
        self._pystratum_metadata['column_types'] = self._columns_types
        self._pystratum_metadata['timestamp'] = self._m_time
        self._pystratum_metadata['replace'] = self._replace
        self._pystratum_metadata['pydoc'] = self._doc_block_parts_wrapper
Updates the metadata of the stored routine.