# File lib/facets/more/behavior.rb, line 6
    def define(behavior, &body)
    if body
      define_method(behavior, &body)
    else
      behavior.each do |behavior, body|
        if body
          define_method(behavior, &body)
        elsif body.nil?
          remove_method(behavior)
        else
          undef_method(behavior)
        end
      end
    end
  end