Questions about mapercannerregister

[mapy95]

I want to know why in version 2.0, mappercannerregister injects the implementation class of beandefinitionregistrypostprocessor interface (mappercannerconfigurer)

What is the reason for the upgrade here?

org.mybatis.spring.annotation. MapperScannerRegistrar#registerBeanDefinitions
`void registerBeanDefinitions(AnnotationMetadata annoMeta, AnnotationAttributes annoAttrs,
BeanDefinitionRegistry registry, String beanName) {

BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(MapperScannerConfigurer.class);
builder.addPropertyValue("processPropertyPlaceHolders", true);`