code: def inference(self, data):
      assert (
          len(data) == 1
      ), "SAM AutoMaticMaskGenerator currently supports batch size of 1"
      return self.mask_generator.generate(data[0])
  
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 4 for calling the SegmentAnythingFastHandler obj's underlying member method code with example usage: obj.inference(data) and returns: self