AssertAndPut OperationsBatch

[dmfs]

Sometimes it might make sense to have a "Compare & Swap"-like operation like so:

public final class AssertAndPut<T> extends DelegatingOperationsBatch
{
    public AssertAndPut(RowSnapshot<T> row, RowData<T> assertion, RowData<T> values)
    {
       super(
             new Assert(row, assertion),
             new Put(row, values)
       );
    }
}