1*ac2a7c1bSSadaf Ebrahimi&id001 !!set 2*ac2a7c1bSSadaf Ebrahimi? !!examples.collections.TypeSafeSetImplementationsTest$Box 3*ac2a7c1bSSadaf Ebrahimi id: id123 4*ac2a7c1bSSadaf Ebrahimi set: *id001 5*ac2a7c1bSSadaf Ebrahimi: null 6*ac2a7c1bSSadaf Ebrahimi111: null 7*ac2a7c1bSSadaf Ebrahimiaaa: null 8