/**
* Returns an object cast to the specified type.
*
* @throws NullPointerException if the object is {@code null}
* @throws IllegalArgumentException if the object is of the wrong type
*/
private static <T> T cast(Class<T> clazz, Object o) {
if (!clazz.isInstance(o)) throw new IllegalArgumentException(o.toString());
return clazz.cast(o);
}
