/** * @param string $feature_type * @param array $feature_args * * @return null|WP_Field_Feature_Base */ function make_field_feature($feature_type, $feature_args) { if ($feature_class = WP_Metadata::get_feature_type($feature_type)) { $feature = new $feature_class($this, $feature_args); } else { $feature = null; } return $feature; }