RaCoCo result: Red::Attr::Column

# Red::Attr::Column 62.5%

    use Red::Column;

    unit role Red::Attr::Column;
    has             %.args;
    has Red::Column $!column;

    method perl { $.column.gist }

    method column(--> Red::Column:D) {
        $!column.DEFINITE ?? $!column !! Red::Column.new: |%!args, :attr(self)
    }

    method create-column(Mu $model = Nil) {
        $!column = Red::Column.new: |%!args, :attr($model !=== Nil ?? self.clone: :package($model) !! self)
    }