code: def __init__(
      self, gt_low_limit: float = None, gt_high_limit: float = None
  ):
      assert (
          gt_low_limit is None or gt_low_limit > 0
      ), f"gt_low_limit must be greater than 0"
      assert (
          gt_high_limit is None or gt_high_limit > 0
      ), f"gt_high_limit must be greater than 0"
      self.gt_low_limit = gt_low_limit
      self.gt_high_limit = gt_high_limit
  
imports: import dataset_keys
label_desc: Use image node_id 1 to create a new ValidDepthMask object  with example: obj = ValidDepthMask(gt_low_limit, gt_high_limit)