code: def __call__(self, sample):
      input_data, gt_data = sample["input"], sample["gt"]
  
      if self.filter_empty_mask:
          if not np.any(gt_data):
              return False
  
      if self.filter_empty_input:
          if not np.any(input_data):
              return False
  
      return True
  
imports: import numpy
label_desc: Use image node_id 2 for calling the SliceFilter obj's underlying member method code with example usage: obj.__call__(sample) and returns: True, False, False