docs: def clean_file_system_paths_from_not_existing_paths(file_system_paths):
      """Cleans list of paths from elements that do not exist
  
      If a path is no more valid/existing, it is removed from the list.
  
      :param list[str] file_system_paths: list of file system paths to be checked for existing
      """
      paths_to_delete = []
      for path in file_system_paths:
          if not os.path.exists(path):
              paths_to_delete.append(path)
      for path in paths_to_delete:
          file_system_paths.remove(path)