def get_type_admin_session(self, proxy=None):
raise Unimplemented()<EOL>
Gets the ``OsidSession`` associated with the ``TypeAdmin`` service.

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