PUM, Topaz – calculated attributes

Due to needs in our application I had to add (for the domain class hierarchy) the possibility to define calculated base attributes and calculated associations.

That means, that the attribute does not held any value (strings, numbers, … or sets of domain objects)- but the values will be calculated with the help of a compiled method block – with only one parameter: the domain object holding the attribute.

This change only matters the Topaz generator – the clients are not changed.

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