// Iterable<String> keys();
- <A> A get(String key, Class<A> clss);
+ <A> A get(String key, Class<A> clss) throws IllegalArgumentException;
// ContentSession getSession();
/*
* DEFAULT METHODS
*/
- default <A> A adapt(Class<A> clss) {
- return null;
+ default <A> A adapt(Class<A> clss) throws IllegalArgumentException {
+ throw new IllegalArgumentException("Cannot adapt content " + this + " to " + clss.getName());
+ }
+
+ default <C extends AutoCloseable> C open(Class<C> clss) throws Exception, IllegalArgumentException {
+ throw new IllegalArgumentException("Cannot open content " + this + " as " + clss.getName());
}
/*