def conf_threshold(self) -> Optional[float]:
        """
        The confidence threshold that the function should use for filtering
        detections.

        If the function is able to estimate confidence levels, then:

        * If this value is None, the function may apply a default threshold at its discretion.

        * Otherwise, it will be a number between 0 and 1. The function must only return
          objects with confidence levels greater than or equal to this value.

        If the function is not able to estimate confidence levels, it can ignore this value.
        """

        The confidence threshold that the function should use for filtering
        detections.

        If the function is able to estimate confidence levels, then:

        * If this value is None, the function may apply a default threshold at its discretion.

        * Otherwise, it will be a number between 0 and 1. The function must only return
          objects with confidence levels greater than or equal to this value.

        If the function is not able to estimate confidence levels, it can ignore this value.
        
cvat-sdk/cvat_sdk/auto_annotation/interface.py