class_docstr: A five-way dictionary between Airflow task ids, Airflow cmds, ECS ARNs, and ECS task objects.
docstr: Get all Airflow Task Keys in collection.
docstr_tok: ["Get","all","Airflow","Task","Keys","in","collection","."]
code: def get_all_task_keys(self) -> list[TaskInstanceKey]:
      """Get all Airflow Task Keys in collection."""
      return list(self.key_to_arn.keys())
  
imports: from __future__ import annotations
  from collections import defaultdict
  from dataclasses import dataclass
  from typing import TYPE_CHECKING, Any, Callable, Dict, List
  from inflection import camelize
  from airflow.utils.state import State
label_desc: Use image node_id 8 for calling the EcsTaskCollection obj's underlying member method code with example usage: obj.get_all_task_keys() and returns: list