CharMatcher after() {
      return CharMatcher.javaLetterOrDigit();
    }
  }

  class JavaUpperCase {
    @BeforeTemplate
    CharMatcher before() {
      return CharMatcher.JAVA_UPPER_CASE;
    }

    @AfterTemplate
    CharMatcher after() {
      return CharMatcher.javaUpperCase();
    }
  }

  class JavaLowerCase {
    @BeforeTemplate
    CharMatcher before() {