PS D:\CS\test> cat config.xml                                                                                         
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
        "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
        "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
<module name="Checker">
    <property name="charset" value="UTF-8"/>
    <module name="TreeWalker">
            <module name="Indentation"/>
    </module>
</module>
PS D:\CS\test> cat src/Test.java                                                                                      
public class Test {

    void test(int obj) {
        switch (obj) {
            case 1 ->
System.out.println("1");                      // This is not being validated
            case 2 -> {
System.out.println("2");  // violation        (there are braces)
            }
        }

        switch (obj) {
            case 1 :
System.out.println("1");  // violation
            case 2 : {
System.out.println("2");  // violation
            }
        }

        if (obj == 1)
System.out.println("1");  // violation
        else {
System.out.println("2");  // violation
        }
    }

}
PS D:\CS\test> java  -jar checkstyle-10.17.0-all.jar -c config.xml src/Test.java
Starting audit...
[ERROR] D:\CS\test\src\Test.java:8:1: 'block' child has incorrect indentation level 0, expected level should be 16. [Indentation]
[ERROR] D:\CS\test\src\Test.java:14:1: 'block' child has incorrect indentation level 0, expected level should be 16. [Indentation]
[ERROR] D:\CS\test\src\Test.java:16:1: 'block' child has incorrect indentation level 0, expected level should be 16. [Indentation]
[ERROR] D:\CS\test\src\Test.java:21:1: 'if' child has incorrect indentation level 0, expected level should be 12. [Indentation]
[ERROR] D:\CS\test\src\Test.java:23:1: 'else' child has incorrect indentation level 0, expected level should be 12. [Indentation]
Audit done.
Checkstyle ends with 5 errors.
PS D:\CS\test>