class Mail::MessageIdsElement

def clean_msg_id( val )
  val =~ /.*<(.*)>.*/ ; $1
end

def initialize(string)
  parser = Mail::MessageIdsParser.new
  if tree = parser.parse(string)
    @message_ids = tree.message_ids.map { |msg_id| clean_msg_id(msg_id.text_value) }
  else
    raise Mail::Field::ParseError, "MessageIdsElement can not parse |#{string}|\nReason was: #{parser.failure_reason}\n"
  end
end

def message_id
  @message_ids.first
end

def message_ids
  @message_ids
end