benweidig/functional-programming-with-java-method-references-c9103cdf5f8-14.java Secret

## functional-programming-with-java-method-references-c9103cdf5f8-14.java
Predicate<String> isNull = $ -> $ == null;

AlsoPredicate<String> wontCompile = isNull::test;
	Predicate<String> isNull = $ -> $ == null;

	AlsoPredicate<String> wontCompile = isNull::test;