# File lib/rolify/adapters/mongoid/role_adapter.rb, line 44
      def find_or_create_by(role_name, resource_type = nil, resource_id = nil)
        self.role_class.find_or_create_by(:name => role_name,
                                          :resource_type => resource_type,
                                          :resource_id => resource_id)
      end