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