func newXposmap(x map[int]lineRange) *xposmap {
	maps := make(map[int32]*biasedSparseMap)
	for i, p := range x {
		maps[int32(i)] = newBiasedSparseMap(int(p.first), int(p.last))
	}
	return &xposmap{maps: maps, lastIndex: -1} // zero for the rest is okay
}

// clear removes data from the map but leaves the sparse skeleton.
func (m *xposmap) clear() {
	for _, l := range m.maps {
		if l != nil {
			l.clear()
		}
	}

    assertEquals(Maps.immutableEntry("foo", 5), entryIterator.next());
    assertEquals(Maps.immutableEntry("bar", 4), entryIterator.next());
    assertEquals(Maps.immutableEntry("foo", 3), entryIterator.next());
    assertEquals(Maps.immutableEntry("cow", 2), entryIterator.next());
    assertEquals(Maps.immutableEntry("bar", 1), entryIterator.next());

// {"Flags":0,"ParamFlags":[96,0],"ResultFlags":null}
// callsite: calls.go:103:9|0 flagstr "" flagval 0 score 2 mask 0 maskstr ""
// callsite: calls.go:112:9|1 flagstr "" flagval 0 score 2 mask 0 maskstr ""
// callsite: calls.go:115:9|2 flagstr "" flagval 0 score 2 mask 0 maskstr ""
// callsite: calls.go:119:12|3 flagstr "CallSiteOnPanicPath" flagval 2 score 102 mask 1 maskstr "panicPathAdj"
// <endcallsites>
// <endfuncpreamble>

    int hash = smearedHash(object);
    int mask = hashTableMask();
    int tableIndex = hash & mask;
    int next = CompactHashing.tableGet(requireTable(), tableIndex);
    if (next == UNSET) { // uninitialized bucket
      if (newSize > mask) {
        // Resize and add new entry
        mask = resizeTable(mask, CompactHashing.newCapacity(mask), hash, newEntryIndex);
      } else {

		return *x == *y
	}

	for _, test := range tests {
		if r := test.src.InMerge(test.mask); !eq(r, test.in) {
			t.Errorf("%v merged with %#x (input): want %v, got %v", test.src, test.mask, test.in, r)
		}
		if r := test.src.OutMerge(test.mask); !eq(r, test.out) {
			t.Errorf("%v merged with %#x (output): want %v, got %v", test.src, test.mask, test.out, r)
		}
	}

	if maskConfigured {
		// original mask flag is still the main reference.
		if maskV4Configured || maskV6Configured {
			return nil, errors.New("usage of --node-cidr-mask-size-ipv4 and --node-cidr-mask-size-ipv6 is not allowed if --node-cidr-mask-size is set. For dual-stack clusters please unset it and use IPFamily specific flags")
		}

		mask := int(cfg.NodeCIDRMaskSize)
		return sortedSizes(mask, mask), nil
	}

// And atomically performs a bitwise AND operation on x using the bitmask
// provided as mask and returns the old value.
func (x *Int32) And(mask int32) (old int32) { return AndInt32(&x.v, mask) }

// Or atomically performs a bitwise OR operation on x using the bitmask
// provided as mask and returns the old value.
func (x *Int32) Or(mask int32) (old int32) { return OrInt32(&x.v, mask) }

// An Int64 is an atomic int64. The zero value is zero.

		// Invalid ip range[0] IPv4 mask
		{"192.0.2.1/33,192.168.128.0/17", "<nil>", "<nil>", "<nil>", true},
		// Invalid ip range[1] IPv4 mask
		{"192.0.2.1/24,192.168.128.0/33", "<nil>", "<nil>", "<nil>", true},
		// Invalid ip range[0] IPv6 mask
		{"2001:db2:1:3:4::1/129,192.0.2.1/24", "<nil>", "<nil>", "<nil>", true},
		// Invalid ip range[1] IPv6 mask

    Map<C, V> row = Maps.safeGet(rowMap(), rowKey);
    return row != null && Maps.safeContainsKey(row, columnKey);
  }

  @Override
  @CheckForNull
  public V get(@CheckForNull Object rowKey, @CheckForNull Object columnKey) {
    Map<C, V> row = Maps.safeGet(rowMap(), rowKey);
    return (row == null) ? null : Maps.safeGet(row, columnKey);
  }

  @Override

	{IPNet{IP: v6addr, Mask: v4mappedv6mask}, IPNet{IP: v6addr, Mask: v4mappedv6mask}},
	{in: IPNet{IP: v6addr, Mask: v4mask}},
	{in: IPNet{IP: v4addr, Mask: badmask}},
	{in: IPNet{IP: v4mappedv6addr, Mask: badmask}},
	{in: IPNet{IP: v6addr, Mask: badmask}},
	{in: IPNet{IP: badaddr, Mask: v4mask}},
	{in: IPNet{IP: badaddr, Mask: v4mappedv6mask}},
	{in: IPNet{IP: badaddr, Mask: v6mask}},
	{in: IPNet{IP: badaddr, Mask: badmask}},