assertUnescaped(e, '.');
    assertUnescaped(e, '*');

    assertEscaping(e, "%00", '\u0000'); // nul
    assertEscaping(e, "%7F", '\u007f'); // del
    assertEscaping(e, "%C2%80", '\u0080'); // xx-00010,x-000000
    assertEscaping(e, "%DF%BF", '\u07ff'); // xx-11111,x-111111
    assertEscaping(e, "%E0%A0%80", '\u0800'); // xxx-0000,x-100000,x-00,0000
    assertEscaping(e, "%EF%BF%BF", '\uffff'); // xxx-1111,x-111111,x-11,1111

    assertUnescaped(e, '.');
    assertUnescaped(e, '*');

    assertEscaping(e, "%00", '\u0000'); // nul
    assertEscaping(e, "%7F", '\u007f'); // del
    assertEscaping(e, "%C2%80", '\u0080'); // xx-00010,x-000000
    assertEscaping(e, "%DF%BF", '\u07ff'); // xx-11111,x-111111
    assertEscaping(e, "%E0%A0%80", '\u0800'); // xxx-0000,x-100000,x-00,0000
    assertEscaping(e, "%EF%BF%BF", '\uffff'); // xxx-1111,x-111111,x-11,1111

      }
    }

    // Testing multibyte escape sequences
    assertEscaping(e, "%00", '\u0000'); // nul
    assertEscaping(e, "%7F", '\u007f'); // del
    assertEscaping(e, "%C2%80", '\u0080'); // xx-00010,x-000000
    assertEscaping(e, "%DF%BF", '\u07ff'); // xx-11111,x-111111
    assertEscaping(e, "%E0%A0%80", '\u0800'); // xxx-0000,x-100000,x-00,0000
    assertEscaping(e, "%EF%BF%BF", '\uffff'); // xxx-1111,x-111111,x-11,1111

// by dots suppressing leading zeros for IPv4 and the representation defined by RFC 5952 for IPv6.
// Valid: 192.168.1.5 or 2001:db8::1 or 2001:db8:aaaa:bbbb:cccc:dddd:eeee:1
// Invalid: 10.01.2.3 or 2001:db8:0:0:0::1
message IPAddress {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
  // +optional

        assertEquals("010203", StringUtil.toHex(new byte[] { 1, 2, 3 }));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testToHex2() throws Exception {
        assertEquals("0001", StringUtil.toHex(1));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testAppendHex() throws Exception {
        final StringBuilder buf = new StringBuilder();

      .isEqualTo("http://[::1]/")
    assertThat(base.newBuilder().host("[::0001]").build().toString())
      .isEqualTo("http://[::1]/")
    assertThat(base.newBuilder().host("::1").build().toString())
      .isEqualTo("http://[::1]/")
    assertThat(base.newBuilder().host("::0001").build().toString())
      .isEqualTo("http://[::1]/")
  }

  @Test
  fun pathCharacters() {

		{+1, +1e3 - 0e0, "1.000001"},
		{+1, +1e0 - 0e0, "1.000000001"},
		{0, 1e9 - 1e0, "0.999999999"},
		{0, 1e9 - 1e3, "0.999999"},
		{0, 1e9 - 1e6, "0.999"},
		{0, 0e0, "0"},
		{0, 1e6 + 0e0, "0.001"},
		{0, 1e3 + 0e0, "0.000001"},
		{0, 1e0 + 0e0, "0.000000001"},
		{-1, -1e9 + 1e0, "-1.999999999"},
		{-1, -1e9 + 1e3, "-1.999999"},
		{-1, -1e9 + 1e6, "-1.999"},
		{-1, -0e0 + 0e0, "-1"},

    if (c <= '\u001f' || c >= '\u007f') {
      return true
    }
    // Check for the characters mentioned in the WHATWG Host parsing spec:
    // U+0000, U+0009, U+000A, U+000D, U+0020, "#", "%", "/", ":", "?", "@", "[", "\", and "]"
    // (excluding the characters covered above).
    if (" #%/:?@[\\]".indexOf(c) != -1) {
      return true
    }
  }
  return false
}

  /**
   * Maximum allowed false positive probability of detecting a hash flooding attack given random
   * input.
   */
  @VisibleForTesting static final double HASH_FLOODING_FPP = 0.001;

  /**
   * Maximum allowed length of a hash table bucket before falling back to a j.u.HashMap based
   * implementation. Experimentally determined.
   */
  static final int MAX_HASH_BUCKET_LENGTH = 8;

		},
		{
			name:    valueBuilders[4]().String(),
			want:    "4919",
			wantAlt: "0",
		},
		{
			name:    valueBuilders[5]().String(),
			want:    "2006-01-02T15:04:05Z",
			wantAlt: "0001T",
		},
		{
			name:    valueBuilders[6]().String(),
			want:    "string contents",
			wantAlt: "",
		},
	}

	for i, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {