code: def _os_x_font_directories(cls):
          
          os_x_font_dirs = [
              '/Library/Fonts',
              '/Network/Library/Fonts',
              '/System/Library/Fonts',
          ]
          home = os.environ.get('HOME')
          if home is not None:
              os_x_font_dirs.extend([
                  os.path.join(home, 'Library', 'Fonts'),
                  os.path.join(home, '.fonts')
              ])
          return os_x_font_dirs
docs: Return a sequence of directory paths on a Mac in which fonts are
          likely to be located.