Static Access to optional Parameters possible?

Hi!

I am new to Ember+ development and tried to query a DHD52/XC Core as described in the Tutorial (with Sapphire Devices). When I use the dynamic approach, everything works perfect. When I use the static approach, I run into problems defining the properties in the static DB classes. E.g. I have up to 50 boolean Parameters called GPO1-GPO50, but if I don‘t define them in DHD configuration, they are not available in the Ember tree. Is there a way to mark properties as optional in the static DB classes? Otherwise I get an Exception traversing down the tree, when the DB class tries to find a parameter (e.g. GPO50) which is not available in the Ember tree?

Any help would be appreciated.
Regards
Kai Markus