code: public void setDefaultTags(java.util.Collection<MessageTag> defaultTags) {
          if (defaultTags == null) {
              this.defaultTags = null;
              return;
          }
  
          this.defaultTags = new com.amazonaws.internal.SdkInternalList<MessageTag>(defaultTags);
      }
docs: <p>
  A list of tags, in the form of name/value pairs, to apply to an email that you send to a destination using
  <code>SendBulkTemplatedEmail</code>.
  </p>
  
  @param defaultTags
  A list of tags, in the form of name/value pairs, to apply to an email that you send to a destination using
  <code>SendBulkTemplatedEmail</code>.