code: private List<String> existingRootPackages() {
          ArrayList<String> packages = new ArrayList<>();
          packages.addAll(Arrays.asList(KNOWN_ROOT_APPS_PACKAGES));
          packages.addAll(Arrays.asList(KNOWN_DANGEROUS_APPS_PACKAGES));
          packages.addAll(Arrays.asList(KNOWN_ROOT_CLOAKING_PACKAGES));
  
          PackageManager pm = context.getPackageManager();
          List<String> packagesFound = new ArrayList<>();
  
          for (String packageName : packages) {
              try {
                  // Root app detected
                  pm.getPackageInfo(packageName, 0);
                  packagesFound.add(packageName);
              } catch (PackageManager.NameNotFoundException e) {
                  // Exception thrown, package is not installed into the system
              }
          }
          return packagesFound;
      }
docs: Checks for packages that are known to indicate root.
  @return - list of such packages found