def del_alias(self, alias):
dcd = self._get_dcd(alias)<EOL>dgsts = self.get_alias(alias)<EOL>self._request('<STR_LIT>', '<STR_LIT>'.format(dcd))<EOL>return dgsts<EOL>
Delete an alias from the registry. The blobs it points to won't be deleted. Use :meth:`del_blob` for that.

.. Note::
   On private registry, garbage collection might need to be run manually; see:
   https://docs.docker.com/registry/garbage-collection/

:param alias: Alias name.
:type alias: str

:rtype: list
:returns: A list of blob hashes (strings) which were assigned to the alias.