code: public void setTags(java.util.Collection<TagRef> tags) {
          if (tags == null) {
              this.tags = null;
              return;
          }
  
          this.tags = new java.util.ArrayList<TagRef>(tags);
      }
docs: <p>
  Optional metadata that you can apply to the virtual service to assist with categorization and organization. Each
  tag consists of a key and an optional value, both of which you define. Tag keys can have a maximum character
  length of 128 characters, and tag values can have a maximum length of 256 characters.
  </p>
  
  @param tags
  Optional metadata that you can apply to the virtual service to assist with categorization and
  organization. Each tag consists of a key and an optional value, both of which you define. Tag keys can
  have a maximum character length of 128 characters, and tag values can have a maximum length of 256
  characters.