'Update the ChannelInstance
:param unicode friendly_name: The friendly_name
:param unicode unique_name: The unique_name
:param unicode attributes: The attributes
:returns: Updated ChannelInstance
:rtype: twilio.rest.chat.v1.service.channel.ChannelInstance'

def update(self, friendly_name=values.unset, unique_name=values.unset, attributes=values.unset):

    return self._proxy.update(friendly_name=friendly_name, unique_name=unique_name, attributes=attributes)
