docs: def get_modules(folder, include_meta=False):
      """Finds modules (recursively) in folder
  
      :param folder: root folder
      :param include_meta: whether include meta files like (__init__ or
          __version__)
      :return: list of modules
      """
      files = [
          file
          for file in _get_modules(folder)
          if is_file(file)  # just files
      ]
  
      if not include_meta:
          files = [
              file
              for file in files
              if not Document(file).name.startswith("__")
          ]
  
      return files