def is_published(self):
return self._my_map['<STR_LIT>']<EOL>
Tests if this asset has been published.

        Not all assets viewable in this repository may have been
        published. The source of a published asset indicates the
        publisher.

        return: (boolean) - true if this asset has been published, false
                if unpublished or its published status is not known
        compliance: mandatory - This method must be implemented.