@utilities.arguments_not_none<EOL><INDENT>def get_proficiency_query_session(self, proxy):<DEDENT>
if not self.supports_proficiency_query():<EOL><INDENT>raise errors.Unimplemented()<EOL><DEDENT>return sessions.ProficiencyQuerySession(proxy=proxy, runtime=self._runtime)<EOL>
Gets the ``OsidSession`` associated with the proficiency query service.

        arg:    proxy (osid.proxy.Proxy): a proxy
        return: (osid.learning.ProficiencyQuerySession) - a
                ``ProficiencyQuerySession``
        raise:  NullArgument - ``proxy`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_proficiency_query()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_proficiency_query()`` is ``true``.*