Adding private flag to private properties

lib/request.d.ts

@@ -93,14 +93,13 @@ export declare enum QueryTypes {
 export declare function SerializeName(name: string): Buffer;
 export declare class Request implements Message {
     private sendCallback;
-    _header: MessageHeader;
+    private _header;
     readonly header: MessageHeader;
-    _questions: MessageQuestion[];
+    private _questions;
     readonly questions: MessageQuestion[];
     answers: RecourceRecord[];
     authorities: RecourceRecord[];
     additionals: RecourceRecord[];
-    _packet: Buffer;
     constructor(packet: Buffer, sendCallback: (packet: Buffer) => any);
     error(error: ErrorCodes): void;
     noRecursion(): void;

lib/request.js

@@ -168,7 +168,6 @@ class Request {
         this.answers = [];
         this.authorities = [];
         this.additionals = [];
-        this._packet = packet;
         let headerData = Buffer.alloc(12);
         packet.copy(headerData, 0, 0, 12);
         let bodyData = Buffer.alloc(packet.length - 12);