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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_renamed_diff(self, blueprint, command, column, schema):
 """ Get a new column instance with the new column name. :param blueprint: The blueprint :type blueprint: Blueprint :param command: The command :type command: Fluent :param column: The column :type column: orator.dbal.Column :param schema: The schema :type schema: orator.dbal.SchemaManager :rtype: orator.dbal.TableDiff """

        table_diff = self._get_table_diff(blueprint, schema)

        return self._set_renamed_columns(table_diff, command, column)