/**
* Load all available Types and Properties from the http://schema.org vocabulary contained in the types.json file
*
* @return void
*
* @since 3.2
*/
protected static function loadTypes()
{
// Load the JSON
if (!static::$types) {
$path = __DIR__ . '/types.json';
static::$types = json_decode(file_get_contents($path), true);
}
}