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/shared/PersistentBase.java package shared; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.MappedSuperclass; @MappedSuperclass public class PersistentBase { protected Long id; @Id @GeneratedValue public Long getId() { return id; } private void setId(Long id) { this.id = id; } public PersistentBase() { } }

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