Example with persistence support

[thaingo]

Hi @ghacupha,
Could you please provide an example similar to AccountTest but with persistence support? I have played a bit with your code but still do not have a clear understanding of a right way to build a persistence model of an account that supports, let's say, getting its balance at a point of time.

Thanks,
Thai

[ghacupha]

Challenge accepted. I will work on this, though the design wasn't specifically created with persistence in mind, there is a merit to being able to apply the concept to persistent entities. This may take the form of implementing the pattern using repositories and services, but we'll see.