Can't use auto when defining lambda function callbacks for methods like Node::Advertise

[adlarkin]

As the title states, when trying to call a method like Advertise with a lambda function callback to create a service, the lambda function must be created before the Advertise method, and must also be fully defined - if the lambda function is created using type auto, then compilation fails when passing this lambda function into the Advertise method. An example can be found here.

[adlarkin]

I believe that this is the reason why we must fully define the lambda function before calling Advertise: https://stackoverflow.com/a/13359347

Taking a look at EntityComponentManager::Each in ign-gazebo, I notice that an identity is used there, which might be why you don't need to pre-define a lambda function when calling EntityComponentManager::Each (I don't see an identity being used for Node::Advertise).