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: writer.rb
    path of file: ./repos/unparser/lib/unparser
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

mod
    
    def self.included(descendant)
      descendant.class_eval do
        include Anima.new(:buffer, :comments, :node, :local_variable_scope)

        extend DSL
      end
    end