          return _("Extract faces from image or video sources.\n"
                   "Extraction plugins can be configured in the 'Settings' Menu")
  
      @staticmethod
      def get_optional_arguments():
          """ Returns the argument list unique to the Extract command.
  
          Returns
          -------
          list
 
</s> remove     def get_optional_arguments():
 </s> add     def get_optional_arguments() -> List[Dict[str, Any]]: </s> remove     def get_argument_list():
 </s> add     def get_argument_list() -> List[Dict[str, Any]]: </s> remove         argument_list = []
 </s> add         argument_list: List[Dict[str, Any]] = [] </s> remove     def get_argument_list():
 </s> add     def get_argument_list() -> List[Dict[str, Any]]: </s> remove     def get_argument_list():
 </s> add     def get_argument_list() -> List[Dict[str, Any]]:
    def get_optional_arguments() -> List[Dict[str, Any]]:
          return _("Extract faces from image or video sources.\n"
                   "Extraction plugins can be configured in the 'Settings' Menu")
  
      @staticmethod
    def get_optional_arguments() -> List[Dict[str, Any]]:
          """ Returns the argument list unique to the Extract command.
  
          Returns
          -------
          list
keep keep keep keep replace keep keep keep keep keep
 Live Preview - Replace cv2 with matplotlib viewer 
lib/cli/args.py