/**
* Ensures that method provided exists in this class.
*
* @param string $name Method name.
*
* @return string Same method name, but validated.
* @throws InvalidArgumentException If method name is not valid (20) or do not exists (21).
*/
protected static function ensureMethodExists($name)
{
$args = ['class' => get_called_class()];
try {
$args['method'] = String::ensureIsValidVarName($name);
} catch (InvalidArgumentException $error) {
$msg = nml_msg('Method name is not valid.');
throw new InvalidArgumentException($msg, 20, $error);
}
if (method_exists($args['class'], $args['method']) === false) {
$msg = nml_msg('"{class}::{method}" do not exists.', $args);
throw new InvalidArgumentException($msg, 21);
}
return $name;
}
