code: def _swap_in(
      self,
      seq_group: SequenceGroup,
      blocks_to_swap_in: Dict[int, int],
  ) -> None:
      mapping = self.block_manager.swap_in(seq_group)
      blocks_to_swap_in.update(mapping)
      for seq in seq_group.get_seqs(status=SequenceStatus.SWAPPED):
          seq.status = SequenceStatus.RUNNING
  
imports: import enum
  import time
  from typing import Dict, Iterable, List, Optional, Tuple, Union
  from bigdl.llm.vllm.config import SchedulerConfig
  from bigdl.llm.vllm.core.policy import PolicyFactory
  from bigdl.llm.vllm.logger import init_logger
  from bigdl.llm.vllm.sequence import SequenceData, SequenceStatus
  from bigdl.llm.vllm.sequence import Sequence, SequenceGroup, SequenceGroupMetadata
  from bigdl.llm.utils.common import invalidInputError
label_desc: Use image node_id 13 for calling the FixedWindowScheduler obj's underlying member method code with example usage: obj._swap_in(seq_group, blocks_to_swap_in) without return types