How to know from which module a given site role comes from?

Question

How to know from which module a given site role comes from?

Answer

First, you can define site roles in the Jahia administration (JAHIA_URL/jahia/administration/rolesAndPermissions): 

You can also import site roles automatically from a module. In that case, the only solution is to look in the source code of Jahia (or your own), for example, with a search like this one.