Try to use macro

client.rb

module Ansa
  private
  # @!macro [attach] generate_get_news
  #   @method get_$1_news
  #   @!scope class
  #   @note This method is autogenerated
  #   Get news for "$1" category.
  #   @raise [Ansa::AnsaError] when errors occour fetching news
  #   @return [Array<Ansa::News>] all the news of category "$1".
  def self.generate_get_news(category, url)
    define_singleton_method("get_#{category}_news") do
      get_news_by_url(url)
    end
  end

  public
  generate_get_news 'soccer', 'the_soccer_url.xml'
  generate_get_news 'politics', 'the_politics_url.xml'

end