class_docstr: Threaded Repeated Timer from http://shortn/_3hMZTFr1Iv.
code: def start(self):
      if not self.is_running:
          self._timer = threading.Timer(self.interval, self._run)
          self._timer.start()
          self.is_running = True
  
file_path: tensorflow/tensorflow/python/distribute/coordinator/utils.py
imports: import threading
  import time
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.training import server_lib
label_desc: Use image node_id 4 for calling the RepeatedTimer obj's underlying member method code with example usage: obj.start() without return types