code: public void setTags(java.util.Collection<MessageTag> tags) {
          if (tags == null) {
              this.tags = null;
              return;
          }
  
          this.tags = new com.amazonaws.internal.SdkInternalList<MessageTag>(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>
  
  @param tags
  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.