:calls: `DELETE /orgs/:org/outside_collaborators/:username <https://developer.github.com/v3/orgs/outside_collaborators>`_
        :param collaborator: :class:`github.NamedUser.NamedUser`
        :rtype: None

def remove_outside_collaborator(self, collaborator):
        """
        :calls: `DELETE /orgs/:org/outside_collaborators/:username <https://developer.github.com/v3/orgs/outside_collaborators>`_
        :param collaborator: :class:`github.NamedUser.NamedUser`
        :rtype: None
        """
        assert isinstance(collaborator, github.NamedUser.NamedUser), collaborator
        headers, data = self._requester.requestJsonAndCheck(
            "DELETE",
            self.url + "/outside_collaborators/" + collaborator._identity
        )