code: public BeanMappingObject getBeanMappingObject(Class src, Class target, boolean autoRegister) {
          BeanMappingObject object = autoRepository.getBeanMappingObject(src, target);
          if (object == null && autoRegister) {
              autoRepository.register(src, target);
              object = getFromRepository(src, target, this.autoRepository);
          }
          return object;
      }
docs: 根据class查找对应的{@linkplain BeanMappingObject}，如果不存在则进行自动注册