Use a method reference

Author: garydgregory

src/test/java/org/apache/commons/collections4/collection/CompositeCollectionTest.java

@@ -380,7 +380,7 @@ public void testRemoveIf() {
         two.add((E) "2");
         two.add((E) "1");
         // need separate list to remove, as otherwise one clears itself
-        final Predicate<E> predicate = e -> "1".equals(e);
+        final Predicate<E> predicate = "1"::equals;
         c.addComposited(one, two);
         c.removeIf(predicate);
         assertFalse(c.contains("1"));