# File lib/active_support/core_ext/module/attribute_accessors.rb, line 42
  def mattr_writer(*syms)
    options = syms.extract_options!
    syms.each do |sym|
      class_eval("unless defined? @@\#{sym}\n@@\#{sym} = nil\nend\n\ndef self.\#{sym}=(obj)\n@@\#{sym} = obj\nend\n", __FILE__, __LINE__ + 1)

      unless options[:instance_writer] == false
        class_eval("def \#{sym}=(obj)\n@@\#{sym} = obj\nend\n", __FILE__, __LINE__ + 1)
      end
    end
  end