[interfacekit] some questions on BApplication

Hi!

I had started to do a patch BApplication, moving the connection to the 
app_server to the "connect_to_app_server()" method, adding 
_init_interface_kit(), setup_server_heaps(), etc.
But I noticed that we are sending to the app server also the app's signature. 
Is that really needed? I tought that the object token would be sufficient.
Can someone explain, please ? 

Thanks.

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