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: source_file.rb
    path of file: ./repos/puts_debuggerer/lib/puts_debuggerer
    
    the code of the file until where you have to start completion: module PutsDebuggerer
  class SourceFile
    def initialize(file_path)
      @file = File.new(file_path) if file_path && File.exist?(file_path)
    end
    
    def source(source_line_count, source_line_number)
      @source = ''
      return @source if RUBY_ENGINE == 'opal'
      # For Opal Ruby compatibility, skip source lines if file does not respond to readline (as in Opal)
      lines = source_lines(source_line_count, source_line_numb
    
    def source(source_line_count, source_line_number)
      @source = ''
      return @source if RUBY_ENGINE == 'opal'
      # For Opal Ruby compatibility, skip source lines if file does not respond to readline (as in Opal)
      lines = source_lines(source_line_count, source_line_number)
      @source = lines.join(' '*5) if @file.respond_to?(:readline)
      @source
    end
    
    def source_lines(source_line_count, source_line_number)
      lines = []
      begin
        while @file && @file.lineno < source_line_number + source_line_count
          file_line_number = @file.lineno + 1
          file_line = @file.readline
          if file_line_number >= source_line_number && file_line_number < source_line_number + source_line_count
            lines << file_line
          end
        end