def options=(options)
      super
      value.each do |k, v|
        k.options = options
        v.options = options
      end
    end
def options=(options)
      super
      value.each do |k, v|
        k.options = options
        v.options = options
      end
    end
Creates a new map.

 @param hash [Hash<Node, Node>]
 @see Value#options=