def clear_descriptions(self):
if self.get_descriptions_metadata().is_read_only():<EOL><INDENT>raise NoAccess()<EOL><DEDENT>self.my_osid_object_form._my_map['<STR_LIT>'] = []<EOL>
Removes all descriptions.

        raise:  NoAccess - ``Metadata.isRequired()`` is ``true`` or
                ``Metadata.isReadOnly()`` is ``true``
        *compliance: mandatory -- This method must be implemented.*