/// <summary>
 /// Generate hash code for request
 /// </summary>
 /// <returns>generated hash code</returns>
 public override int GetHashCode()
 {
     unchecked
     {
         return((Method?.GetHashCode() ?? 0) ^
                (Uri?.GetHashCode() ?? 0) ^
                (QueryParam?.GetHashCode() ?? 0) ^
                (PostParams?.GetHashCode() ?? 0));
     }
 }