$value ) { $resolved[ $key ] = static::resolve_value( $value ); } return $resolved; } private static function resolve_value( $value ) { if ( ! is_array( $value ) ) { return $value; } if ( ! empty( $value['$$type'] ) && array_key_exists( 'value', $value ) ) { return static::resolve_value( $value['value'] ); } return array_map( [ static::class, 'resolve_value' ], $value ); } }