EditEntityFieldAccessCheck::validateRequestAttributes

protected EditEntityFieldAccessCheck::validateRequestAttributes(EntityInterface $entity, $field_name, $langcode)

protected function validateRequestAttributes(EntityInterface $entity, $field_name, $langcode) {
  // Validate the field name and language.
  if (!$field_name || !$entity->hasField($field_name)) {
    return FALSE;
  }
  if (!$langcode || !$entity->hasTranslation($langcode)) {
    return FALSE;
  }

  return TRUE;
}