How do 'hasPermission' and 'hasOnlyRoles' work?

[craigchandler]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Feature request
[X ] Documentation issue or request

Current behavior

How do 'hasPermission' and 'hasOnlyRoles' work?

I do a this._rolesService.addRoleWithPermissions('ADMIN', ['admin' ]);

both hasPermission('admin') and hasOnlyRoles('ADMIN') return false

[craigchandler]

discovered it, mixed promises and observables