ipToInsert := ip.Unmap()

	// We have already Unmap'd, so we can do a simple IsV6 y/n check now
	if ipToInsert.Is6() {
		return m.Deps.addIP(m.V6Name, ipToInsert, ipProto, comment, replace)
	}
	return m.Deps.addIP(m.V4Name, ipToInsert, ipProto, comment, replace)
}

func (m *IPSet) DeleteIP(ip netip.Addr, ipProto uint8) error {
	ipToDel := ip.Unmap()

    j.appendTo(sb2, ImmutableMultimap.of(1, 2, 3, 4, 5, 6, 1, 3, 5, 10).entries().iterator());
    assertEquals("1:2;1:3;3:4;5:6;5:10", sb2.toString());
  }

  public void test_skipNulls_onMap() {
    Joiner j = Joiner.on(",").skipNulls();
    try {
      j.withKeyValueSeparator("/");
      fail();
    } catch (UnsupportedOperationException expected) {
    }
  }

    j.appendTo(sb2, ImmutableMultimap.of(1, 2, 3, 4, 5, 6, 1, 3, 5, 10).entries().iterator());
    assertEquals("1:2;1:3;3:4;5:6;5:10", sb2.toString());
  }

  public void test_skipNulls_onMap() {
    Joiner j = Joiner.on(",").skipNulls();
    try {
      j.withKeyValueSeparator("/");
      fail();
    } catch (UnsupportedOperationException expected) {
    }
  }