# File lib/twitter/rest/friends_and_followers.rb, line 185
      def friendship(source, target, options = {})
        merge_user!(options, source, 'source')
        options[:source_id] = options.delete(:source_user_id) unless options[:source_user_id].nil?
        merge_user!(options, target, 'target')
        options[:target_id] = options.delete(:target_user_id) unless options[:target_user_id].nil?
        perform_get_with_object('/1.1/friendships/show.json', options, Twitter::Relationship)
      end