As chromatic says, it's not clear what you are asking here. Are you saying you want to do this:

$hostGrp->updateObject( $object, 'do_something', @args );
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instead of this:

$object->do_something( @args );
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so you can persist the internal effects of calling the $object->do_something() method?

If so, it isn't clear exactly what's the question?

dmm