code: function(objJoint, arrChainsOfRecipientPrivateElements, arrChainsOfCosignerPrivateElements){
  						network.broadcastJoint(objJoint);
  						if (!arrChainsOfRecipientPrivateElements && recipient_device_address) // send notification about public payment
  							walletGeneral.sendPaymentNotification(recipient_device_address, objJoint.unit.unit);
  						handleResult(null, objJoint.unit.unit);
  					}
docs: for asset payments, 2nd argument is array of chains of private elements for base asset, 2nd argument is assocPrivatePayloads which is null