class_docstr: Tracker that tracks the resources.
docstr: Create a new scheduler.
docstr_tok: ["Create","a","new","scheduler","."]
code: def create_scheduler(self, key):
      """Create a new scheduler."""
      return PriorityScheduler(key)
  
imports: import asyncio
  import heapq
  import logging
  import socket
  import threading
  import errno
  import struct
  import json
  from tvm.contrib.popen_pool import PopenWorker
  from .._ffi.base import py_str
  from .None import base
  from .base import RPC_TRACKER_MAGIC, TrackerCode
label_desc: Use image node_id 3 for calling the TrackerServerHandler obj's underlying member method code with example usage: obj.create_scheduler(key) and returns: PriorityScheduler