You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: border.rb
    path of file: ./repos/shoes4/shoes-swt/lib/shoes/swt
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class Shoes
  module Swt
    class Bor
    
      def initialize(dsl, app)
        @dsl = dsl
        @app = app
        @container = @app.real

        @painter = Painter.new(self)
        @app.add_paint_listener @painter
      end