in src/request-parameters/RequestParametersBase.php [59:74]
private static function getSpec<T as RequestParameter>(
dict<string, RequestParameter> $specs,
classname<T> $class,
string $name,
): T {
$spec = $specs[$name];
invariant(
/* HH_FIXME[4162] need reified generics */
\is_a($spec, $class),
'Expected %s to be a %s, got %s',
$name,
$class,
\get_class($spec),
);
return /* HH_FIXME[4110] */ $spec;
}