class Gem::ConfigFile

def each(&block)
  hash = @hash.dup
  hash.delete :update_sources
  hash.delete :verbose
  hash.delete :backtrace
  hash.delete :bulk_threshold
  yield :update_sources, @update_sources
  yield :verbose, @verbose
  yield :backtrace, @backtrace
  yield :bulk_threshold, @bulk_threshold
  yield 'config_file_name', @config_file_name if @config_file_name
  hash.each(&block)
end