':calls: `GET /user/subscriptions/:owner/:repo <http://developer.github.com/v3/activity/watching>`_
:param subscription: :class:`github.Repository.Repository`
:rtype: bool'

def has_in_subscriptions(self, subscription):

    assert isinstance(subscription, github.Repository.Repository), subscription
    (status, headers, data) = self._requester.requestJson('GET', ('/user/subscriptions/' + subscription._identity))
    return (status == 204)
