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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.util.*;
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/**
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* 员工管理系统演示类 - 展示所有功能模块的使用
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*/
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public class EmployeeSystemDemo {
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public static void main(String[] args) {
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System.out.println("========================================");
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System.out.println("员工管理系统演示（单一职责原则实现）");
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System.out.println("========================================");
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// 创建演示数据和服务
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List<Employee> employees = createSampleEmployees();
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// 演示基础功能
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demonstrateBasicFeatures(employees);
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// 演示进阶功能
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demonstrateAdvancedFeatures(employees);
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// 演示挑战功能
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demonstrateChallengeFeatures(employees);
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System.out.println("\n========================================");
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System.out.println("演示完成！");
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System.out.println("========================================");
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}
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/**
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* 创建示例员工数据
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*/
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private static List<Employee> createSampleEmployees() {
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List<Employee> employees = new ArrayList<>();
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employees.add(new Employee("EMP001", "张三", 15000.0, "技术部", "高级工程师",
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LocalDate.of(2020, 5, 15), LocalDate.of(1990, 3, 20), "zhangsan@company.com"));
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employees.add(new Employee("EMP002", "李四", 12000.0, "技术部", "工程师",
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LocalDate.of(2021, 8, 10), LocalDate.of(1995, 6, 12), "lisi@company.com"));
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employees.add(new Employee("EMP003", "王五", 18000.0, "技术部", "技术经理",
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LocalDate.of(2018, 12, 20), LocalDate.of(1985, 11, 5), "wangwu@company.com"));
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employees.add(new Employee("EMP004", "赵六", 9000.0, "人事部", "人事专员",
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LocalDate.of(2022, 3, 1), LocalDate.of(1998, 2, 28), "zhaoliu@company.com"));
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employees.add(new Employee("EMP005", "钱七", 13000.0, "财务部", "财务主管",
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LocalDate.of(2019, 10, 8), LocalDate.of(1988, 9, 15), "qianqi@company.com"));
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return employees;
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}
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/**
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* 演示基础功能
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*/
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private static void demonstrateBasicFeatures(List<Employee> employees) {
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System.out.println("\n【基础功能演示】");
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System.out.println("----------------------------------------");
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// 1. Employee类的基本功能演示
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System.out.println("1. 员工信息和邮箱验证：");
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for (Employee emp : employees) {
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System.out.println(emp);
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}
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// 2. 尝试设置无效邮箱
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try {
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Employee testEmp = employees.get(0);
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System.out.println("\n2. 邮箱验证测试：");
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System.out.println("尝试设置无效邮箱...");
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testEmp.setEmail("invalid-email");
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} catch (IllegalArgumentException e) {
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System.out.println("验证成功：" + e.getMessage());
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}
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// 3. EmailService功能演示
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System.out.println("\n3. 邮件通知服务演示：");
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EmailService emailService = new EmailService();
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// 发送入职通知
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emailService.sendWelcomeEmail("EMP006", "孙八", "sunba@company.com",
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"市场部", "2024-01-15");
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// 发送薪资调整通知
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emailService.sendSalaryAdjustmentEmail("EMP001", "张三", "zhangsan@company.com",
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15000.0, 17000.0, "2024-02-01");
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}
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/**
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* 演示进阶功能
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*/
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private static void demonstrateAdvancedFeatures(List<Employee> employees) {
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System.out.println("\n【进阶功能演示】");
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System.out.println("----------------------------------------");
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// 1. EmployeeSearch功能演示
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System.out.println("1. 员工搜索功能：");
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EmployeeSearch search = new EmployeeSearch();
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// 按薪资范围搜索
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List<Employee> highSalaryEmployees = search.searchBySalaryRange(employees, 13000, 20000);
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System.out.println("\n薪资13000-20000的员工：");
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highSalaryEmployees.forEach(System.out::println);
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// 按部门搜索
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List<Employee> techEmployees = search.searchByDepartment(employees, "技术部");
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System.out.println("\n技术部员工：");
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techEmployees.forEach(System.out::println);
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// 2. EmployeeStatistics功能演示
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System.out.println("\n2. 员工统计功能：");
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EmployeeStatistics stats = new EmployeeStatistics();
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System.out.println("薪资统计：");
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System.out.printf("总薪资: %.2f\n", stats.calculateTotalSalary(employees));
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System.out.printf("平均薪资: %.2f\n", stats.calculateAverageSalary(employees));
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System.out.printf("最高薪资: %.2f\n", stats.getMaxSalary(employees));
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System.out.printf("最低薪资: %.2f\n", stats.getMinSalary(employees));
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// 部门薪资分布
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System.out.println("\n部门薪资分布：");
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Map<String, EmployeeStatistics.DepartmentSalaryStats> deptStats =
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stats.calculateDepartmentSalaryDistribution(employees);
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deptStats.forEach((dept, data) -> {
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System.out.println(dept + ": " + data);
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});
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// 年龄分布
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System.out.println("\n员工年龄分布：");
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Map<String, Long> ageDist = stats.calculateAgeDistribution(employees);
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ageDist.forEach((range, count) -> {
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System.out.println(range + ": " + count + "人");
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});
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}
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/**
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* 演示挑战功能
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*/
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private static void demonstrateChallengeFeatures(List<Employee> employees) {
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System.out.println("\n【挑战功能演示】");
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System.out.println("----------------------------------------");
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// 1. EmployeeHistory功能演示
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System.out.println("1. 员工历史记录功能：");
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EmployeeHistory empHistory = new EmployeeHistory("EMP001");
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// 记录各种变更
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empHistory.recordSalaryChange(15000.0, 17000.0, "年度调薪", "HR-001");
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empHistory.recordPositionChange("高级工程师", "资深工程师", "晋升", "HR-001");
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empHistory.recordDepartmentChange("技术部", "研发部", "部门调整", "HR-001");
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// 显示历史记录
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System.out.println("\n员工EMP001的历史记录：");
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List<EmployeeHistory.ChangeRecord> records = empHistory.getAllHistory();
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for (EmployeeHistory.ChangeRecord record : records) {
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System.out.println(record);
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}
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// 2. 培训管理系统功能演示
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System.out.println("\n创建培训课程：");
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TrainingCourse course1 = new TrainingCourse("COURSE001", "Java高级编程",
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"Java企业级开发高级技术", 20, "张讲师", "技术部", "技术培训", 3);
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TrainingCourse course2 = new TrainingCourse("COURSE002", "项目管理基础",
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"项目管理理论与实践", 15, "李讲师", "管理部", "管理培训", 2);
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TrainingManagementSystem trainingSystem = new TrainingManagementSystem();
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trainingSystem.addCourse(course1);
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trainingSystem.addCourse(course2);
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// 员工报名
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System.out.println("\n员工报名课程：");
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String recordId1 = trainingSystem.enrollEmployee("EMP001", "COURSE001",
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"张三", "zhangsan@company.com");
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// 开始培训
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System.out.println("\n开始培训：");
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trainingSystem.startTraining(recordId1, LocalDate.now().minusDays(5));
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// 完成培训（成绩合格，自动颁发证书）
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System.out.println("\n完成培训并颁发证书：");
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trainingSystem.completeTraining(recordId1, LocalDate.now(), 92.5,
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"张三", "zhangsan@company.com");
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// 查看证书
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List<TrainingRecord> trainingRecords = trainingSystem.getCourseTrainingRecords("COURSE001");
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Certificate certificate = null;
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if (!trainingRecords.isEmpty()) {
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TrainingRecord record = trainingRecords.get(0);
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certificate = trainingSystem.getCertificate(record.getCertificateId());
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System.out.println("\n颁发的证书信息：");
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System.out.println(certificate);
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}
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// 生成培训报告
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System.out.println("\n培训系统统计报告：");
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Map<String, Object> report = trainingSystem.generateTrainingReport();
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report.forEach((key, value) -> {
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System.out.println(key + ": " + value);
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});
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// 3. 综合演示：员工培训历史记录
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System.out.println("\n3. 综合功能演示 - 员工培训历史：");
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EmployeeHistory empTrainingHistory = new EmployeeHistory("EMP001");
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String certId = certificate != null ? certificate.getCertificateId() : "CERT-N/A";
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empTrainingHistory.recordTrainingCompletion("Java高级编程", certId, 92.5, "TRAIN-001");
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System.out.println("\n员工培训完成记录：");
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List<EmployeeHistory.ChangeRecord> changeRecords =
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empTrainingHistory.getHistoryByType(EmployeeHistory.ChangeType.TRAINING_COMPLETION);
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changeRecords.forEach(System.out::println);
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}
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} |
