public static function extensionMethod($name, $callback = NULL)
{
if (strpos($name, '::') === FALSE) {
$class = get_called_class();
} else {
list($class, $name) = explode('::', $name);
$class = (new \ReflectionClass($class))->getName();
}
trigger_error("Extension methods such as {$class}::{$name}() are deprecated" . ObjectMixin::getSource(), E_USER_DEPRECATED);
if ($callback === NULL) {
return ObjectMixin::getExtensionMethod($class, $name);
} else {
ObjectMixin::setExtensionMethod($class, $name, $callback);
}
}