Make method package private in the mapper.

Author: akuksin

spring-boot/request-response/client/src/main/java/io/reflectoring/client/registration/async/service/RegistrationMapper.java

@@ -7,7 +7,7 @@
 @Component
 public class RegistrationMapper {
 
-    public Registration toRegistration(RegistrationDto registrationDto){
+    Registration toRegistration(RegistrationDto registrationDto){
         return Registration.builder()
                 .id(registrationDto.getId())
                 .date(registrationDto.getDate())