source: class MatcherTest {
  
    @Test
    public void testTransform() {
  
target:     assertEquals("*", Matcher.all().transform(Functions.constant("foo")).patternString());
      assertSame(Matcher.all(), Matcher.all().transform(Functions.constant("bar")));
      assertEquals("identity/path", Matcher.of("identity/path").transform(Functions.<String>identity()).patternString());
      assertEquals("foo(foo),*", Matcher.of("any(thing),*").transform(Functions.constant("foo")).patternString());
      assertEquals("FOO/*,BAR/*(BAZ)", Matcher.of("foo/*,bar/*(baz)").transform(upperCase()).patternString());
    }
  
  }