# Pastebin VK6OimoN
MacBook-Pro-de-Fernando:rakudo fernando$ ./perl6 -e 'role R { method r {...} }; class C does R { has R $.a }'
===SORRY!=== Error while compiling -e
Method 'r' must be implemented by C because it is required by roles: R.
at -e:1
MacBook-Pro-de-Fernando:rakudo fernando$ ./perl6 -e 'role R { method r {...} }; class C does R { has R $.a handles <r> is required }'
MacBook-Pro-de-Fernando:rakudo fernando$