def set_active_fields(self, fields=None):
        """Set the active fields in the App.

        Args:
            fields (None): the possibly-empty list of fields or
                ``embedded.fields`` to set
        """
        if fields is None:
            fields = []

        return self._ctx.trigger(
            "set_active_fields", params={"fields": fields}
        )
Set the active fields in the App.

        Args:
            fields (None): the possibly-empty list of fields or
                ``embedded.fields`` to set
        
fiftyone/operators/operations.py