          if retval:
              logger.debug("Sending should stop")
          return retval
  
      def _launch_thread(self) -> Optional[FSThread]:
          """ Launch the preview viewer in it's own thread if preview has been selected
  
          Returns
          -------
          :class:`lib.multithreading.FSThread` or ``None``
 
</s> remove         retval: Optional[str] = "copy"
 </s> add         retval: str | None = "copy" </s> remove     def errors(self) -> List[_ErrorType]:
 </s> add     def errors(self) -> list[_ErrorType]: </s> remove     def _binning(self) -> List[List[str]]:
 </s> add     def _binning(self) -> list[list[str]]: </s> remove     def add_image(self, name: str, image: "np.ndarray") -> None:
 </s> add     def add_image(self, name: str, image: np.ndarray) -> None: </s> remove                           kwargs=dict(triggers=self._triggers))
 </s> add                           kwargs={"triggers": self._triggers})
    def _launch_thread(self) -> FSThread | None:
          if retval:
              logger.debug("Sending should stop")
          return retval
  
    def _launch_thread(self) -> FSThread | None:
          """ Launch the preview viewer in it's own thread if preview has been selected
  
          Returns
          -------
          :class:`lib.multithreading.FSThread` or ``None``
keep keep keep keep 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 
scripts/train.py