All entities should have only int ID, String should be built in toString method

[F-I-D-O]

No description provided.

[marekcuchy]

I think that String IDs are better for this purpose. It allows us to say something about e.g. the type of the entity directly in the ID making e.g. debugging easier and also logs from the simulation are easier to read.

Is there any reason why String should be replaced?

[F-I-D-O]

If the ID type is not bound to int, it leads to a mess in logs, where messages like "Request request 345" appears. I think that if you want to say something about the type, the toString method is appropriate for that.

[marekcuchy]

After a short discussion, this issue is postponed until integer IDs would bring significant performance benefit (which it does not now).

String IDs can be self-descriptive to provide better human readability.