'Create a new MemberInstance
:param unicode identity: The identity
:param unicode role_sid: The role_sid
:returns: Newly created MemberInstance
:rtype: twilio.rest.chat.v2.service.channel.member.MemberInstance'

def create(self, identity, role_sid=values.unset):

    data = values.of({'Identity': identity, 'RoleSid': role_sid})
    payload = self._version.create('POST', self._uri, data=data)
    return MemberInstance(self._version, payload, service_sid=self._solution['service_sid'], channel_sid=self._solution['channel_sid'])
