detected at https://github.com/checkstyle/checkstyle/pull/18268/changes#r2617337861

src/test/java/com/puppycrawl/tools/checkstyle/internal/XdocsExampleFileTest.java

should be updated to catch that some ExampleX.java
is not added to
https://github.com/checkstyle/checkstyle/blob/master/src/xdocs-examples/java/com/puppycrawl/tools/checkstyle/checks/whitespace/WhitespaceAroundExamplesTest.java

we can just make sure that were is ("Example11.java") in WhitespaceAroundExamplesTest.java