public function decodeUsing(\MSF\EncoderInterface $encoder)
 {
     $data = $encoder->decode($this->encoded);
     if (isset($data->errors)) {
         $this->errors = $data->errors;
     } elseif (isset($data->body)) {
         $this->body = $data->body;
     }
 }
 public function decodeUsing(\MSF\EncoderInterface $encoder)
 {
     $data = $encoder->decode($this->encoded);
     $this->rpc = $data->rpc;
     $this->args = $data->args;
 }