def clear_public_domain(self):
metadata = Metadata(**settings.METADATA['<STR_LIT>'])<EOL>if metadata.is_read_only() or metadata.is_required():<EOL><INDENT>raise NoAccess()<EOL><DEDENT>self._my_map['<STR_LIT>'] = False<EOL>
Removes the public domain status.

        :raise: ``NoAccess`` -- ``Metadata.isRequired()`` is ``true`` or
            ``Metadata.isReadOnly()`` is ``true``

        *compliance: mandatory -- This method must be implemented.*