class_docstr: ImageClassifier handler class. This handler takes an image
  and returns the name of object in that image.
code: def postprocess(self, data):
      ps = F.softmax(data, dim=1)
      probs, classes = torch.topk(ps, self.topk, dim=1)
      probs = probs.tolist()
      classes = classes.tolist()
      return map_class_to_label(probs, self.mapping, classes)
  
file_path: serve/ts/torch_handler/dali_image_classifier.py
imports: import torch
  import torch.nn.functional
  from ..utils.util import map_class_to_label
  from .dali_handler import DALIHandler
label_desc: Use image node_id 3 for calling the DALIImageClassifier obj's underlying member method code with example usage: obj.postprocess(data) and returns: map_class_to_label