M2 course tests

application/model/src/main/java/org/fuseri/model/dto/common/DomainObjectDto.java

 package org.fuseri.model.dto.common;
 
 import jakarta.validation.constraints.NotNull;
+import lombok.EqualsAndHashCode;
 import lombok.Getter;
 import lombok.Setter;
 
 @Getter
 @Setter
+@EqualsAndHashCode(exclude = "id")
 public abstract class DomainObjectDto {
 
     @NotNull