@MappedSuperclass
public class AbstractEntity<ID extends Serializable> {
    @Id
    @GeneratedValue
    protected ID id;
...

@Entity
@Table(name = "SomeEntity")
public class SomeEntity extends AbstractEntity<Integer> {
    
}

public Predicate toPredicate(Root root, CriteriaQuery criteriaQuery, CriteriaBuilder criteriaBuilder) {
                {color:red}//Here we have - Serializable, but expected Integer.{color}
                root.get("id").getJavaType();
                return ...;
            }