class_docstr: The implementation of InternalWindowProcessFunction for PanedWindowAssigner.
class_docstr_tok: ["The","implementation","of","InternalWindowProcessFunction","for","PanedWindowAssigner","."]
code: def assign_state_namespace(
      self, input_row: List, timestamp: int
  ) -> List[W]:
      pane = self._window_assigner.assign_pane(input_row, timestamp)
      if not self._is_pane_late(pane):
          return [pane]
      else:
          return []
  
imports: from abc import abstractmethod, ABC
  from typing import Generic, List, Iterable, Dict, Set
  from pyflink.common import Row
  from pyflink.common.constants import MAX_LONG_VALUE
  from pyflink.datastream.state import MapState
  from pyflink.fn_execution.table.window_assigner import WindowAssigner, PanedWindowAssigner, MergingWindowAssigner
  from pyflink.fn_execution.table.window_context import Context, K, W
label_desc: Use image node_id 2 for calling the PanedWindowProcessFunction obj's underlying member method code with example usage: obj.assign_state_namespace(input_row, timestamp) and returns: list, list