class_docstr: Handler which handles normal input data.
class_docstr_tok: ["Handler","which","handles","normal","input","data","."]
code: def __init__(
      self,
      internal_timer_service: InternalTimerServiceImpl,
      on_event_time_func,
      on_processing_time_func,
      namespace_coder,
      has_side_output,
  ):
      self._internal_timer_service = internal_timer_service
      self._on_event_time_func = on_event_time_func
      self._on_processing_time_func = on_processing_time_func
      self._namespace_coder = namespace_coder
      self._has_side_output = has_side_output
  
imports: from abc import ABC
  from enum import Enum
  from typing import cast, Iterable
  from pyflink.common import Row
  from pyflink.common.constants import DEFAULT_OUTPUT_TAG
  from pyflink.datastream.output_tag import OutputTag
  from pyflink.fn_execution.datastream.process.timerservice_impl import InternalTimerServiceImpl
label_desc: Use image node_id 1 to create a new TimerHandler object from inherited base classes: ABC with example: obj = TimerHandler(internal_timer_service, on_event_time_func, on_processing_time_func, namespace_coder, has_side_output)