docs: @Override
      public String findClassAbsoluteFileName(String fileName, String className, List<String> sourceRoots) {
          // usually the fileName is just the name of the file without any package information
          // so lets turn the package name into a path
          int lastIdx = className.lastIndexOf('.');
          if (lastIdx > 0 && !(fileName.contains("/") || fileName.contains(File.separator))) {
              String packagePath = className.substring(0, lastIdx).replace('.', File.separatorChar);
              fileName = packagePath + File.separator + fileName;
          }
          File baseDir = getBaseDir();
          String answer = findInSourceFolders(baseDir, fileName);
          if (answer == null && sourceRoots != null) {
              for (String sourceRoot : sourceRoots) {
                  answer = findInSourceFolders(new File(sourceRoot), fileName);
                  if (answer != null) break;
              }
          }
          return answer;
      }