class CreatePost
  module RequestInterface
    # Interface specification for request objects that are used to initialize the create_post interactor
    
    # build on the general interface
    extend Interface

    # any request object must have a title method and it must return an instance of String
    def title
      if defined?(super)
        value = super
        raise Interface::InvalidReturn unless value.is_a? String
        value
      else
        raise Interface::MissingMethod
      end
    end
  end
end