def get_alias(self, alias):
status = self.status([alias])<EOL>return status['<STR_LIT>'].keys()<EOL>
Get the index or indices pointed to by a given alias.
(See :ref:`es-guide-reference-api-admin-indices-aliases`)

:param alias: the name of an alias

:return returns a list of index names.
:raise IndexMissingException if the alias does not exist.