Minor changes to 'assuming'.
Minor changes to 'assuming'.

* Include the definedness checks.
* Include the return type.
* Don't emit anonymous raw parameters as '\'.

lucasbuchala/rakudo,jonathanstowe/rakudo,MasterDuke17/rakudo,samcv/rakudo,Gnouc/rakudo,labster/rakudo,awwaiid/rakudo,usev6/rakudo,sjn/rakudo,Gnouc/rakudo,salortiz/rakudo,tony-o/rakudo,labster/rakudo,tbrowder/rakudo,awwaiid/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,usev6/rakudo,Gnouc/rakudo,rakudo/rakudo,labster/rakudo,tony-o/rakudo,jonathanstowe/rakudo,tbrowder/rakudo,rakudo/rakudo,salortiz/rakudo,tbrowder/rakudo,softmoth/rakudo,nbrown/rakudo,softmoth/rakudo,softmoth/rakudo,rakudo/rakudo,rakudo/rakudo,tony-o/rakudo,softmoth/rakudo,usev6/rakudo,softmoth/rakudo,Gnouc/rakudo,tony-o/rakudo,awwaiid/rakudo,sjn/rakudo,Gnouc/rakudo,lucasbuchala/rakudo,raydiak/rakudo,sjn/rakudo,lucasbuchala/rakudo,labster/rakudo,awwaiid/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,raydiak/rakudo,rakudo/rakudo,sjn/rakudo,usev6/rakudo,jonathanstowe/rakudo,MasterDuke17/rakudo,nbrown/rakudo,samcv/rakudo,nbrown/rakudo,sjn/rakudo,raydiak/rakudo,rakudo/rakudo,salortiz/rakudo,tony-o/rakudo,MasterDuke17/rakudo,nbrown/rakudo,nbrown/rakudo,tony-o/rakudo,samcv/rakudo,MasterDuke17/rakudo,samcv/rakudo,jonathanstowe/rakudo,lucasbuchala/rakudo,raydiak/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,nbrown/rakudo,labster/rakudo,salortiz/rakudo,awwaiid/rakudo,usev6/rakudo,salortiz/rakudo,jonathanstowe/rakudo,samcv/rakudo,labster/rakudo,tbrowder/rakudo,salortiz/rakudo