Problem naming a method

Hi,
In a part of my project I have an defined a class A. A has several attributes, classified in two groups: fix ones and evolving ones. To reflect this in data base I have two different tables
- FixA: fix data of A. PK is A's id.
- EvoA: evolutive data of A. PK is A's id and the number of instance.
To reflect this in memory, I created two clases called FixA and EvoA. One of the attributes of EvoA is "instance".
E.g. I want to insert the A object with id 1, I would create the FixA instance of A, with id 1 and would create a EvoA object with id=1 and instance=1, apart from the other values. If I have to introduce A another time and some values have changed, I won't create the FixA instance with id=1 (because it already exists) but will create a new EvoA with id=1 and instance=2, apart from the rest of values.
Of course, each attribute has it's own getter/setter. My problem is that I want to create a static method in EvoA which returns me an instance of EvoA called getInstance. Since the name would be the same and the name getInstance normally refers to this second option, can anybody recomend me a nice name for the attribute instance?
Thanks

>
It actually looks like your attribute that currently is named instance should be renamed to version. Naming it instance is confusing since most developers would think of something else.
Kaj

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