docs: function newLocalModel (call) {
      // get clone of call and reset original
      call = resetCall(call)
      // require immutable core
      assert.ok(GLOBAL.immutableCoreModel !== undefined, 'ImmutableAI configuration error: immutableCoreModel required')
      // get model - throws error if not found
      var model = GLOBAL.immutableCoreModel.model(call.module)
      // return new local model with session
      return model.session(call.session)
  }