code: func (F *Frisby) ExpectStatus(code int) *Frisby {
  	Global.NumAsserts++
  	status := F.Resp.StatusCode
  	if status != code {
  		err_str := fmt.Sprintf("Expected Status %d, but got %d: %q", code, status, F.Resp.Status)
  		F.AddError(err_str)
  	}
  	return F
  }
docs: // Checks the response status code