code: def wait_for_command_termination(self, delay=1):
      try:
          while True:
              if self.command_terminated():
                  break
              time.sleep(delay)
      except:
          pass
  
imports: import threading
  import time
  from bluefog.run.horovodrun.common.util import network
  from bluefog.run.horovodrun.common.util import safe_shell_exec
label_desc: Use image node_id 6 for calling the BasicTaskClient obj's underlying member method code with example usage: obj.wait_for_command_termination(delay) without return types