# File lib/uuidtools.rb, line 303
  def nil_uuid?
    return false if self.time_low != 0
    return false if self.time_mid != 0
    return false if self.time_hi_and_version != 0
    return false if self.clock_seq_hi_and_reserved != 0
    return false if self.clock_seq_low != 0
    self.nodes.each do |node|
      return false if node != 0
    end
    return true
  end