jobject jcomm = env->NewObject(comm_class, jtask_method_Comm_constructor);
const char* mailbox = env->GetStringUTFChars(jmailbox, 0);
msg_task_t task = jtask_to_native(jtask, env);
jobject jcomm = env->NewObject(comm_class, jtask_method_Comm_constructor);
const char* mailbox = env->GetStringUTFChars(jmailbox, 0);
msg_task_t task = jtask_to_native(jtask, env);