Platform not initialized when generically editing *capella/*melodymodeller EMF model

I am trying to generically modify a capella-model (stored in the Capella-file) generically using the EMF API.
However, I keep on getting the error that the Platform is not initialized and thus no IHelpers are registered (see error below).
Could anybody be so kind and give me a pointer how to properly initialize a Platform and register the IHelpers for the Capella-Metamodel?
Your help is greatly appreciated!
With best regards,