registerMuleBeanDefinitionParser("transformer", new ParentDefinitionParser()).addAlias(AbstractMuleBeanDefinitionParser.ATTRIBUTE_REF, "messageProcessor");
registerBeanDefinitionParser("custom-transformer", new MessageProcessorDefinitionParser());
registerBeanDefinitionParser("auto-transformer", new MessageProcessorDefinitionParser(AutoTransformer.class));
registerBeanDefinitionParser("message-properties-transformer", new MessagePropertiesTransformerDefinitionParser());
registerMuleBeanDefinitionParser("expression-transformer", new ExpressionTransformerDefinitionParser(
ExpressionTransformer.class));
registerBeanDefinitionParser("return-argument", new ChildDefinitionParser("argument", ExpressionArgument.class));