这是一种分层可选协议的设计：核心字段（id、meta、capabilities、config）是必须的，其余功能按需实现。一个简单的 webhook 通道可以只实现 outbound；一个功能完整的平台可以实现全部 Adapter。
She recommends that anyone who finds bats in a building should contact the National Bat Helpline for advice.，详情可参考新收录的资料
The A Wall:* Calculating a 200-300km car route (or even shorter bicycle/pedestrian paths) could mean visiting over a million road segments, taking 10-20 seconds. For longer trips, this wait could become frustrating.，更多细节参见新收录的资料
Purple: ___ Press。业内人士推荐新收录的资料作为进阶阅读