Adding a client role to a group

[Gaëtan]

Hi everybody, 

I'm currently working on an Ansible module to administrate the role mappings of Keycloak. 

I don't understand what is the use case of assigning a client role to a group. 

The role is already assigned to the client and if we had it to the group this role will be inherited only to this same client ? Or to every member of the group ?  

I didn't find the information in the documentation, if someone could help me to understand this feature, it would be very nice. 

Thanks in advance, 

Gaëtan