code: public ThymeleafEngineConfigBuilder<P> setDefaultMessageResolvers(final Set<? extends IMessageResolver> defaultMessageResolvers) {
  		this.defaultMessageResolvers().clear();
  		this.defaultMessageResolvers().addAll(defaultMessageResolvers);
  		return this;
  	}
docs: <p>
  Sets the default message resolvers. These are used when no message
  resolvers are set via the {@link #setMessageResolver(IMessageResolver)},
  {@link #setMessageResolvers(Set)} or
  {@link #addMessageResolver(IMessageResolver)} methods.
  </p>
  <p>
  This method is useful for creating subclasses of <tt>TemplateEngine</tt>
  that establish default configurations for message resolvers.
  </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 defaultMessageResolvers
  the default message resolvers.
  @return this for fluent use