code: def pin_assets(self, file_or_dir_path: Path) -> List[Dict[str, str]]:
          
          if file_or_dir_path.is_dir():
              asset_data = [dummy_ipfs_pin(path) for path in file_or_dir_path.glob("*")]
          elif file_or_dir_path.is_file():
              asset_data = [dummy_ipfs_pin(file_or_dir_path)]
          else:
              raise FileNotFoundError(
                  f"{file_or_dir_path} is not a valid file or directory path."
              )
          return asset_data
docs: Return a dict containing the IPFS hash, file name, and size of a file.