class_docstr: A five-way dictionary between Airflow task ids, Airflow cmds, ECS ARNs, and ECS task objects.
docstr: Get all AWS ARNs in collection.
docstr_tok: ["Get","all","AWS","ARNs","in","collection","."]
code: def get_all_arns(self) -> list[str]:
      """Get all AWS ARNs in collection."""
      return list(self.key_to_arn.values())
  
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 7 for calling the EcsTaskCollection obj's underlying member method code with example usage: obj.get_all_arns() and returns: list