class_docstr: Internal implementation of InternalTimerService.
code: def delete_processing_time_timer(self, namespace: N, ts: int):
      current_key = self._keyed_state_backend.get_current_key()
      self._set_timer(
          TimerOperandType.DELETE_PROC_TIMER, ts, current_key, namespace
      )
  
imports: import collections
  import time
  from enum import Enum
  from io import BytesIO
  from pyflink.common import Row
  from pyflink.datastream import TimerService
  from pyflink.fn_execution.datastream.timerservice import InternalTimer, K, N, InternalTimerService
label_desc: Use image node_id 9 for calling the InternalTimerServiceImpl obj's underlying member method code with example usage: obj.delete_processing_time_timer(namespace, ts) without return types