def METHOD_NAME(self):
    ''':returns the sorted list of container_name,signature pairs that \
        are written.
    :rtype: List[Tuple[str,:py:class:`psyclone.core.Signature`]]
    '''
    if not self._sorted:
        self._read_list.sort()
        self._write_list.sort()
        self._sorted = True
    return self._write_list