+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Index;
+import jakarta.persistence.Inheritance;
+import jakarta.persistence.InheritanceType;
+import jakarta.persistence.Table;
+import jakarta.persistence.TableGenerator;
+import jakarta.persistence.Temporal;
+import jakarta.persistence.TemporalType;
+import jakarta.validation.constraints.NotNull;
+import java.io.Serial;