public ImmutableIntCharMap newWithKeyValue(int key, char value)
{
MutableIntCharMap map = new IntCharHashMap(this.size() + 1);
map.putAll(this);
map.put(key, value);
return map.toImmutable();
}
public ImmutableIntCharMap newWithoutKey(int key)
{
MutableIntCharMap map = new IntCharHashMap(this.size());