Arguments.of(new byte[] { (byte) 0xAB }, "ab"),
                Arguments.of(new byte[] { (byte) 0x7F, (byte) 0x80, (byte) 0xFF }, "7f80ff"));
    }

    // Verifies that toString() formats bytes as lower-case hex with zero-padding
    @ParameterizedTest(name = "toString renders hex for {0}")
    @MethodSource("hexCases")

1F0E0..1F0F5  ; valid                  ;      ; NV8    # 7.0  PLAYING CARD FOOL..PLAYING CARD TRUMP-21
1F0F6..1F0FF  ; disallowed                             # NA   <reserved-1F0F6>..<reserved-1F0FF>
1F100         ; disallowed                             # 5.2  DIGIT ZERO FULL STOP
1F101         ; disallowed_STD3_mapped ; 0030 002C     # 5.2  DIGIT ZERO COMMA

            + "\u3000\ud800\ufeff\ufff9";
    private static final String RANGE_ENDS = // inclusive ends
        "\u0020\u00a0\u00ad\u0605\u061c\u06dd\u070f\u0891\u08e2\u1680\u180e\u200f\u202f\u2064\u206f"
            + "\u3000\uf8ff\ufeff\ufffb";

    static final CharMatcher INSTANCE = new Invisible();

    private Invisible() {
      super("CharMatcher.invisible()", RANGE_STARTS.toCharArray(), RANGE_ENDS.toCharArray());
    }
  }