docs: function HttpRequestError(nestedError, status, body){
  
    nestedError = nestedError || null;
    status = status || -1;
    body = body || null;
  
    superError.call(
      this,
      'HttpRequestError',
      util.format('An error [%s] occurred requesting content from an HTTP source: %s', status, nestedError || body)
    );
  
    this.status = status;
    this.body = body;
    this.nestedError = nestedError;
  }