code: public ThymeleafEngineConfigBuilder<P> setMessageResolvers(final Set<? extends IMessageResolver> messageResolvers) {
  		this.messageResolvers().clear();
  		this.messageResolvers().addAll(messageResolvers);
  		return this;
  	}
docs: <p>
  Sets the message resolvers to be used by this 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 messageResolvers
  the Set of template resolvers.
  @return this for fluent use