class_docstr: Tracker client session.
  
  Parameters
  ----------
  addr : tuple
      The address tuple
class_docstr_tok: ["Tracker","client","session",".","Parameters","--","--","--","--","--","addr",":","tuple","The","address","tuple"]
docstr: Close the tracker connection.
docstr_tok: ["Close","the","tracker","connection","."]
code: def close(self):
      """Close the tracker connection."""
      if self._sock:
          self._sock.close()
          self._sock = None
  
imports: import os
  import socket
  import stat
  import struct
  import time
  import tvm._ffi
  from tvm._ffi.base import TVMError
  from tvm.contrib import utils
  from tvm.runtime import ndarray
  from tvm._ffi.runtime_ctypes import Device
  from .None import _ffi_api, base, server
label_desc: Use image node_id 4 for calling the TrackerSession obj's underlying member method code with example usage: obj.close() without return types