code: def strategy_all(keys: List[Text], count: int) -> Iterable[Text]:
      """Selects all keys from the set of keys."""
      return keys
  
file_path: rasa/rasa/core/evaluation/marker_tracker_loader.py
imports: import random
  from rasa.shared.exceptions import RasaException
  from rasa.shared.core.trackers import DialogueStateTracker
  from typing import Any, Iterable, List, Text, Optional, AsyncIterator
  from rasa.core.tracker_store import TrackerStore
  import rasa.shared.utils.io
label_desc: Use image node_id 1 for calling a global function with example usage: strategy_all(keys, count) and returns: keys