public CreatePolicyResponse createPolicy(IamClient client) {
    CreatePolicyRequest createPolicyRequest = new CreatePolicyRequest();
    // 设置策略名
    createPolicyRequest.setName("test_policy_name");
    // 设置策略描述
    createPolicyRequest.setDescription("test_policy_description");
    // 策略内容，ACL格式序列化后得到的String
    createPolicyRequest.setDocument("{\"accessControlList\": [{\"region\":\"bj\",\"service\":\"bcc\",\"resource\":[\"*\"]," +
                "\"permission\":[\"*\"],\"effect\":\"Allow\"}]}");
                
    client.createPolicy(createPolicyRequest);
}

public void getPolicy(IamClient client) {
    // 策略名
    String policyName = "test_policy_name";
    // 要查询的策略类型，为System时查询系统策略；为Custom时查询自定义策略
    String policyType = "System";
    
    client.getPolicy(policyName, policyType);
}

public void deletePolicy(IamClient client) {
    // 策略名
    String policyName = "test_policy_name";
    client.deletePolicy(policyName);
}

public void listPolicy(IamClient client) {
    // 要查询的策略类型，为System时查询系统策略；为Custom时查询自定义策略
    String policyType = "System";
    
    client.listPolicy(policyType);
}

public void attachPolicyToUser(IamClient client) {
    // 用户名
    String userName = "test_user_name";
    // 策略名
    String policyName = "test_policy_name";
    // 策略类型
    String policyType = "System";
    
    client.attachPolicyToUser(userName, policyName, policyType);
}

public void detachPolicyFromUser(IamClient client) {
    // 用户名
    String userName = "test_user_name";
    // 策略名
    String policyName = "test_policy_name";
    // 策略类型
    String policyType = "System";
    
    client.detachPolicyFromUser(userName，policyName, policyType)
}

public void listPoliciesForUser(IamClient client) {
    // 用户名
    String userName = "test_user_name";
    
    return client.listPoliciesForUser(userName)
}

public void attachPolicyToGroup(IamClient client) {
     // 组名
    String groupName = "test_group_name";
    // 策略名
    String policyName = "test_policy_name";
    // 策略类型
    String policyType = "System";
    
    client.attachPolicyToGroup(userName, policyName, policyType);
}

public void detachPolicyFromGroup(IamClient client) {
    // 组名
    String groupName = "test_group_name";
    // 策略名
    String policyName = "test_policy_name";
    // 策略类型
    String policyType = "System";
    
    client.detachPolicyFromGroup(groupName, policyName, policyType);
}

public void listPoliciesForGroup(IamClient client) {
     // 组名
    String groupName = "test_group_name";
    
    client.listPoliciesForUser(groupName);
}

public void attachPolicyToRole(IamClient client) {
    // 角色名
    String roleName = "test_role_name";
    // 策略名
    String policyName = "test_policy_name";
    // 策略类型
    String policyType = "System";
    
    client.attachPolicyToRole(roleName, policyName, policyType);
}

public void detachPolicyFromRole(IamClient client) {
    // 角色名
    String roleName = "test_role_name";
    // 策略名
    String policyName = "test_policy_name";
    // 策略类型
    String policyType = "System";
    
    client.detachPolicyFromRole(roleName, policyName, policyType);
}

public void listPoliciesForRole(IamClient client) {
    // 角色名
    String roleName = "test_role_name";
    client.listPoliciesForRole(roleName);
}