Set the renamed columns on the table diff.

        :rtype: orator.dbal.TableDiff

def _set_renamed_columns(self, table_diff, command, column):
        """
        Set the renamed columns on the table diff.

        :rtype: orator.dbal.TableDiff
        """
        new_column = Column(command.to, column.get_type(), column.to_dict())

        table_diff.renamed_columns = {command.from_: new_column}

        return table_diff