code: def kernels_initialize_cli(self, folder=None):
          
          folder = folder or os.getcwd()
          meta_file = self.kernels_initialize(folder)
          print('Kernel metadata template written to: ' + meta_file)
docs: client wrapper for kernels_initialize, takes same arguments but
              sets default folder to be None. If None, defaults to present
              working directory.
               Parameters
              ==========
              folder: the path of the folder (None defaults to ${PWD})