Documentation for method add_trustee assembled from the following pages:

Role: Metamodel::Trusting §

From Metamodel::Trusting

(Metamodel::Trusting) method add_trustee §

method add_trustee($type, Mu $trustee)

Trust $trustee.

class A {
    BEGIN A.^add_trustee(B);
    # same as 'trusts B'; 
}