src/Google/Model.php
private function getMappedName($key)
  {
    if (isset($this->internal_gapi_mappings, $this->internal_gapi_mappings[$key])) {
      $key = $this->internal_gapi_mappings[$key];
    }
    return $key;
  }
private function getMappedName($key)
  {
    if (isset($this->internal_gapi_mappings, $this->internal_gapi_mappings[$key])) {
      $key = $this->internal_gapi_mappings[$key];
    }
    return $key;
  }
If there is an internal name mapping, use that.