keras/src/layers/rnn/stacked_rnn_cells.py/StackedRNNCells/from_config
class StackedRNNCells:    def from_config(cls, config, custom_objects=None):
        cells = []
        for cell_config in config.pop("cells"):
            cells.append(
                serialization_lib.deserialize_keras_object(
                    cell_config, custom_objects=custom_objects
                )
            )
        return cls(cells, **config)