this method refers to a private method, so stub it
this method refers to a private method, so stub it

now the method can be compiled

perl6/doc,tbrowder/doc,MasterDuke17/doc,tbrowder/doc,perl6/doc,perl6/doc,MasterDuke17/doc,tbrowder/doc,MasterDuke17/doc,tbrowder/doc,perl6/doc,MasterDuke17/doc,perl6/doc