class_docstr: Base class for all vision handlers
code: def initialize(self, context):
      super().initialize(context)
      self.ig = IntegratedGradients(self.model)
      self.initialized = True
      properties = context.system_properties
      if not properties.get("limit_max_image_pixels"):
          Image.MAX_IMAGE_PIXELS = None
  
file_path: serve/ts/torch_handler/vision_handler.py
imports: import base64
  import io
  from abc import ABC
  import torch
  from captum.attr import IntegratedGradients
  from PIL import Image
  from ts.handler_utils.timer import timed
  from .base_handler import BaseHandler
label_desc: Use image node_id 1 for calling the VisionHandler obj's underlying member method code with example usage: obj.initialize(context) without return types