code: public void setEmailTags(java.util.Collection<MessageTag> emailTags) {
          if (emailTags == null) {
              this.emailTags = null;
              return;
          }
  
          this.emailTags = new java.util.ArrayList<MessageTag>(emailTags);
      }
docs: <p>
  A list of tags, in the form of name/value pairs, to apply to an email that you send using the
  <code>SendEmail</code> operation. Tags correspond to characteristics of the email that you define, so that you
  can publish email sending events.
  </p>
  
  @param emailTags
  A list of tags, in the form of name/value pairs, to apply to an email that you send using the
  <code>SendEmail</code> operation. Tags correspond to characteristics of the email that you define, so that
  you can publish email sending events.