in tomee-patch-plugin/src/main/java/org/apache/tomee/patch/plugin/PatchMojo.java [405:410]
private List<Clazz> classes() {
return Dir.from(buildDirectory).files()
.filter(file -> file.getName().endsWith(".class"))
.map(file -> new Clazz(Paths.childPath(buildDirectory, file), file))
.collect(Collectors.toList());
}