code: public ThymeleafEngineConfigBuilder<P> setTemplateResolver(final ITemplateResolver templateResolver) {
  		templateResolvers().clear();
  		templateResolvers().add(templateResolver);
  		return this;
  	}
docs: <p>
  Sets a single template resolver for this template engine.
  </p>
  <p>
  Calling this method is equivalent to calling
  {@link #setTemplateResolvers(Set)} passing a Set with only one template
  resolver.
  </p>
  
  @param templateResolver
  the template resolver to be set.
  @return this for fluent use