_NextID
static int32 _NextID();
static int32 _NextID();
node->ino = _NextID();
ino_t _NextID() { return fNextId++; }
uint16 _NextID();
family.SetTo(new (std::nothrow) FontFamily(face->family_name, _NextID()), true);
virtual uint16 _NextID();
: fID(_NextID()),
fPartitionData.id = id >= 0 ? id : _NextID();