code: def _get_package_data(root, file_patterns=None):
      
      if file_patterns is None:
          file_patterns = ['*']
      return _get_files(file_patterns, _glob_pjoin(HERE, root))
docs: Expand file patterns to a list of `package_data` paths.
  
      Parameters
      -----------
      root: str
          The relative path to the package root from `HERE`.
      file_patterns: list or str, optional
          A list of glob patterns for the data file locations.
          The globs can be recursive if they include a `**`.
          They should be relative paths from the root or
          absolute paths.  If not given, all files will be used.
  
      Note:
      Files in `node_modules` are ignored.