Formatter { public static String toLowerCase(String source) { return source.toLowerCase(); } private  Formatter(); static String toUpperCase(String source); static String toLowerCase(String source); static String toCamelCase(String source); static String toUnderscoreCase(String source); static String toPascalCase(String source);  }
@Test public void testToLowerCase() throws Exception { assertEquals("some_foo", Formatter.toLowerCase("SOME_FOO")); }