docs: function OtrlMessageAppOps( event_handler ){
      //keep track of all created instances
      //index into array will be passed around as opdata to tie
      //the event_handler to the relevant instance.
      if(!OPS_QUEUE) OPS_QUEUE = ASYNC.queue(ops_handle_event,1)
  
      var self = this;
  
      MAO.push({
          instance:self,
      });
      this._event_handler = event_handler;
      this._opsdata = _malloc(4);
      setValue(this._opsdata,MAO.length-1,"i32");
      this._pointer = jsapi_.messageappops_new();
  }