code: def set_dynamic_handler(self, handler: DynamicUpdateHandler):
      self.app_tracker.add_handler(DynamicHyperParamHandler(handler))
  
imports: import threading
  import time
  from typing import Dict, Optional, TYPE_CHECKING
  from .None import AppTracker, Packet, AppTrackDataSource, AppTrackResponseHandler
  from .dynamic import DynamicUpdateHandler
  from .url import AppUrlResponseHandler
  from ..configs.processor import ConfigsSaver
label_desc: Use image node_id 7 for calling the AppExperiment obj's underlying member method code with example usage: obj.set_dynamic_handler(handler) without return types