      Writes a file to the cache folder that is picked up by the main process.
      """
      def __init__(self) -> None:
          logger.debug("Initializing: %s", self.__class__.__name__)
          self._trigger_files = dict(update=os.path.join(PATHCACHE, ".preview_trigger"),
                                     mask_toggle=os.path.join(PATHCACHE, ".preview_mask_toggle"))
          logger.debug("Initialized: %s (trigger_files: %s)",
                       self.__class__.__name__, self._trigger_files)
  
      def set(self, trigger_type: Literal["update", "mask_toggle"]):
          """ Place the trigger file into the cache folder
 
</s> remove     def set(self, trigger_type: Literal["update", "mask_toggle"]):
 </s> add     def set(self, trigger_type: T.Literal["update", "mask_toggle"]): </s> remove     def clear(self, trigger_type: Optional[Literal["update", "mask_toggle"]] = None) -> None:
 </s> add     def clear(self, trigger_type: T.Literal["update", "mask_toggle"] | None = None) -> None: </s> remove         self._data: Dict[int, _CacheData] = {}
        self._carry_over: Dict[int, EventData] = {}
        self._loss_labels: List[str] = []
 </s> add         self._data: dict[int, _CacheData] = {}
        self._carry_over: dict[int, EventData] = {}
        self._loss_labels: list[str] = [] </s> remove     def check_input_folder(self) -> Optional[cv2.VideoCapture]:
 </s> add     def check_input_folder(self) -> cv2.VideoCapture | None: </s> remove         self._images: Dict[str, "np.ndarray"] = {}
 </s> add         self._images: dict[str, np.ndarray] = {}
        self._trigger_files = {"update": os.path.join(PATHCACHE, ".preview_trigger"),
                               "mask_toggle": os.path.join(PATHCACHE, ".preview_mask_toggle")}
      Writes a file to the cache folder that is picked up by the main process.
      """
      def __init__(self) -> None:
          logger.debug("Initializing: %s", self.__class__.__name__)
        self._trigger_files = {"update": os.path.join(PATHCACHE, ".preview_trigger"),
                               "mask_toggle": os.path.join(PATHCACHE, ".preview_mask_toggle")}
        self._trigger_files = {"update": os.path.join(PATHCACHE, ".preview_trigger"),
                               "mask_toggle": os.path.join(PATHCACHE, ".preview_mask_toggle")}
          logger.debug("Initialized: %s (trigger_files: %s)",
                       self.__class__.__name__, self._trigger_files)
  
      def set(self, trigger_type: Literal["update", "mask_toggle"]):
          """ Place the trigger file into the cache folder
keep keep keep keep replace replace keep keep keep keep keep
 Rebase code (#1326)

* Remove tensorflow_probability requirement

* setup.py - fix progress bars

* requirements.txt: Remove pre python 3.9 packages

* update apple requirements.txt

* update INSTALL.md

* Remove python<3.9 code

* setup.py - fix Windows Installer

* typing: python3.9 compliant

* Update pytest and readthedocs python versions

* typing fixes

* Python Version updates
  - Reduce max version to 3.10
  - Default to 3.10 in installers
  - Remove incompatible 3.11 tests

* Update dependencies

* Downgrade imageio dep for Windows

* typing: merge optional unions and fixes

* Updates
  - min python version 3.10
  - typing to python 3.10 spec
  - remove pre-tf2.10 code
  - Add conda tests

* train: re-enable optimizer saving

* Update dockerfiles

* Update setup.py
  - Apple Conda deps to setup.py
  - Better Cuda + dependency handling

* bugfix: Patch logging to prevent Autograph errors

* Update dockerfiles

* Setup.py - Setup.py - stdout to utf-8

* Add more OSes to github Actions

* suppress mac-os end to end test 
lib/gui/utils/image.py