76     public function getField($field, $default = null)  function in Facebook\\Authentication\\AccessTokenMetadata
98         return $this->getField($field, $default);
156         return $this->getField('app_id');
166         return $this->getField('application');
177         return $this->getField('error') !== null;
217         return $this->getField('expires_at');
227         return $this->getField('is_valid');
242         return $this->getField('issued_at');
253         return $this->getField('metadata');
294         return $this->getField('profile_id');
305         return $this->getField('scopes');
315         return $this->getField('user_id');