public ActivityBehavior createCamelActivityBehavior(SendTask sendTask, BpmnModel bpmnModel) {
   return createCamelActivityBehavior(sendTask, sendTask.getFieldExtensions(), bpmnModel);
 }
 public MailActivityBehavior createMailActivityBehavior(SendTask sendTask) {
   return createMailActivityBehavior(sendTask.getId(), sendTask.getFieldExtensions());
 }