Arguments { static boolean looksLikeKey(String x) { return x.startsWith("--"); }  static Parameters parse(String[] args);  }
@Test public void testLooksLikeKey() throws Exception { assertTrue(Arguments.looksLikeKey("--foo")); assertTrue(Arguments.looksLikeKey("--bar=baz")); assertFalse(Arguments.looksLikeKey("bar=baz")); }