The ability to filter app role assignments of a service principal based on Groups or Users

When using the Microsoft Graph to list the app roles assignments granted for a service principal, it could be helpful in having the ability to filter based on whether the principal type is a Group or User.

I feel that this would be useful in situations were determining which groups have been assigned to an application would be needed, same would be true for user.

Currently filter can only be done on the principal display name.