code: def build_user(attrs)
        user = User.new(client, attrs)
        user = if client.user == user
          client.user
        elsif @creator == user
          creator
        elsif result = @listeners && listener(user.id) || @moderators && moderator(user.id) || friend(user.id)
          result
        else
          user
        end
        user.attributes = attrs
        user
      end
docs: Gets the user represented by the given attributes.  This can either pull
   the user from:
   * The currently authorized user
   * The room's creator
   * The room's listeners
   * The room's moderators
  
   If the user isn't present in any of those, then a new User instance will
   get created.
  
   @api private
   @param [Hash] attrs The attributes representing the user
   @return [Turntabler::User]