_hasRole

Lets you check whether the current user, or some other Person, has the specified Role -- Function
The same Type -> _hasRole (role) -> TrueOrFalse Type
Receives -- The same Type
A Person, or anything
role
A Role
Produces
True iff the specified Person has the specified Role.
If this function receives a Person, it checks that Person. Otherwise, it checks the current user. These are both useful, in different situations.