# File lib/mail/elements/message_ids_element.rb, line 7
    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