txt: ## parametricrolehow.md
  role Metamodel::ParametricRoleHOW
  
  Represents a non-instantiated, parameterized, role.
  
  ```raku
      class Metamodel::ParametricRoleHOW
          does Metamodel::Naming
          does Metamodel::Documenting
          does Metamodel::Versioning
          does Metamodel::MethodContainer
          does Metamodel::PrivateMethodContainer
          does Metamodel::MultiMethodContainer
          does Metamodel::AttributeContainer
          does Metamodel::RoleContainer
          does Metamodel::MultipleInheritance
          does Metamodel::Stashing
          does Metamodel::TypePretense
          does Metamodel::RolePunning
          does Metamodel::ArrayType {}
  
  ```
  
  *Warning*: this class is part of the Rakudo implementation, and is not a part of the language specification.
  
  A `Metamodel::ParametricRoleHOW` represents a non-instantiated, possibly parameterized, role:
  
  ```raku
  (role Zape[::T] {}).HOW.say;# OUTPUT: «Perl6::Metamodel::ParametricRoleHOW.new␤»
  (role Zape {}).HOW.say; # OUTPUT: «Perl6::Metamodel::ParametricRoleHOW.new␤»
  
  ```
  
  As usual, `.new_type` will create a new object of this class.
  
  ```raku
  my \zipi := Metamodel::ParametricRoleHOW.new_type( name => "zape", group => "Zape");
  say zipi.HOW; # OUTPUT: «Perl6::Metamodel::ParametricRoleHOW.new␤»
  
  ```
  
  The extra `group` argument will need to be used to integrate it in a parametric role group, which will need to be defined in advance.
  
  *Note*: As most of the `Metamodel` classes, this one is here mainly for illustration purposes and it's not intended for the final user to instantiate, unless their intention is really to create a parametric role group.
  