[AutoIncrement] field attribute added. Use it to automatically get a unique number (sequence from 1 normally) generated for every instance of a class to be stored in a field within a class, such as in:
public class Person : OptimizedPersistable
{
string firstName;
string lastName;
ushort age;
UInt64 idNumber;
Person bestFriend;
[AutoIncrement]
UInt64 autoIncrement;
SortedSetAny<Person> friends;