code: def postprocess(self, data):
      # Serialize the output using Pickle
      serialized_data = pickle.dumps(data)
  
      # Encode the serialized data as Base64
      base64_encoded_data = base64.b64encode(serialized_data).decode(
          "utf-8"
      )
  
      return [base64_encoded_data]
  
file_path: serve/examples/large_models/segment_anything_fast/custom_handler.py
imports: import base64
  import io
  import logging
  import pickle
  import cv2
  import numpy
  import torch
  from PIL import Image
  from segment_anything_fast import SamAutomaticMaskGenerator, sam_model_fast_registry
  from ts.handler_utils.timer import timed
  from ts.torch_handler.base_handler import BaseHandler
label_desc: Use image node_id 5 for calling the SegmentAnythingFastHandler obj's underlying member method code with example usage: obj.postprocess(data) and returns: list