public function serializeToJsonString()
    {
        $output = new CodedOutputStream($this->jsonByteSize());
        $this->serializeToJsonStream($output);
        return $output->getData();
    }
public function serializeToJsonString()
    {
        $output = new CodedOutputStream($this->jsonByteSize());
        $this->serializeToJsonStream($output);
        return $output->getData();
    }
public function serializeToJsonString ( ) { $ output = new CodedOutputStream ( $ this -> jsonByteSize ( ) ) ; $ this -> serializeToJsonStream ( $ output ) ; return $ output -> getData ( ) ; }
Serialize the message to json string.
@return string Serialized json protobuf data.
Serialize the message to json string .