in src/request-parameters/RequestParametersBase.php [35:45]
final protected function getRequiredSpec<T as RequestParameter>(
classname<T> $class,
string $name,
): T {
invariant(
C\contains_key($this->requiredSpecs, $name),
'%s is not a required parameter',
$name,
);
return self::getSpec($this->requiredSpecs, $class, $name);
}