code: public java.util.List<MessageTag> getTags() {
          if (tags == null) {
              tags = new com.amazonaws.internal.SdkInternalList<MessageTag>();
          }
          return tags;
      }
docs: <p>
  A list of tags, in the form of name/value pairs, to apply to an email that you send using
  <code>SendRawEmail</code>. Tags correspond to characteristics of the email that you define, so that you can
  publish email sending events.
  </p>
  
  @return A list of tags, in the form of name/value pairs, to apply to an email that you send using
  <code>SendRawEmail</code>. Tags correspond to characteristics of the email that you define, so that you
  can publish email sending events.