class Metamodel::ConcreteRoleHOW does Metamodel::Naming does Metamodel::Versioning does Metamodel::PrivateMethodContainer does Metamodel::MethodContainer does Metamodel::MultiMethodContainer does Metamodel::AttributeContainer does Metamodel::RoleContainer does Metamodel::MultipleInheritance does Metamodel::ArrayType does Metamodel::Concretization {}
Warning: this class is part of the Rakudo implementation, and is not a part of the language specification.
You can use this to build roles, in the same way that ClassHOW can be used to build classes:
my $a = Metamodel::ConcreteRoleHOW.new_type(name => "Bar"); $a.^compose; say $a.^roles; # OUTPUT: «(Mu)»
The main difference with ClassHOW.new_type is that you can mix-in roles in this newly created one.
This class is Rakudo specific, and provided only for completeness. Not really intended to be used by the final user.