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: test_grapheme_breaks.rb
    path of file: ./repos/truffleruby/test/mri/tests/ruby/enc
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
# Copyright © 201
    
    def initialize(line_number, data, comment)
      @line_number = line_number
      @comment = comment
      @clusters = data.sub(/\A\s*÷\s*/, '')
                      .sub(/\s*÷\s*\z/, '')
                      .split(/\s*÷\s*/)
                      .map do |cl|
                        cl.split(/\s*×\s*/)
                          .map do |ch|
                            c = ch.to_i(16)
                             # eliminate cases with surrogates
                            raise ArgumentError if 0xD800 <= c and c <= 0xDFFF
                            c.chr('UTF-8')
                          end.join
                      end
      @string = @clusters.join
    end
  end