docs: def save(self, filehandle, destination=None, metadata=None,
               validate=True, catch_all_errors=False, *args, **kwargs):
          """Saves the filehandle to the provided destination or the attached
          default destination. Allows passing arbitrary positional and keyword
          arguments to the saving mechanism
  
          :param filehandle: werkzeug.FileStorage instance
          :param dest: String path, callable or writable destination to pass the
              filehandle off to. Transfer handles transforming a string or
              writable object into a callable automatically.
          :param metadata: Optional mapping of metadata to pass to validators,
              preprocessors, and postprocessors.
          :param validate boolean: Toggle validation, defaults to True
          :param catch_all_errors boolean: Toggles if validation should collect
              all UploadErrors and raise a collected error message or bail out on
              the first one.
          """
          destination = destination or self._destination
          if destination is None:
              raise RuntimeError("Destination for filehandle must be provided.")
  
          elif destination is not self._destination:
              destination = _make_destination_callable(destination)
  
          if metadata is None:
              metadata = {}
  
          if validate:
              self._validate(filehandle, metadata)
  
          filehandle = self._preprocess(filehandle, metadata)
          destination(filehandle, metadata)
          filehandle = self._postprocess(filehandle, metadata)
          return filehandle