code: public void addLinkBuilder(final ILinkBuilder linkBuilder) {
          Validate.notNull(linkBuilder, "Link Builder cannot be null");
          checkNotInitialized();
          this.linkBuilders.add(linkBuilder);
      }
docs: <p>
  Adds a link builder to the set of link builders to be used
  by the template engine.
  </p>
  <p>
  This operation can only be executed before processing templates for the first
  time. Once a template is processed, the template engine is considered to be
  <i>initialized</i>, and from then on any attempt to change its configuration
  will result in an exception.
  </p>
  
  @param linkBuilder the new link builder to be added.