Cloud Functions-获取Firestore触发器的auth对象

Question

在Firebase RTDB中，有一种方法可以从context.auth到get the auth's object：

exports.dbWrite = functions.database.ref('/path/with/{id}').onWrite((data, context) => {
  const authVar = context.auth; // Auth information for the user.
  const authType = context.authType; // Permissions level for the user.
  const pathId = context.params.id; // The ID in the Path.
  const eventId = context.eventId; // A unique event ID.
  const timestamp = context.timestamp; // The timestamp at which the event happened.
  const eventType = context.eventType; // The type of the event that triggered this function.
  const resource = context.resource; // The resource which triggered the event.
  // ...
});

我想知道是否也可以在Firestore上这样做。

我的主要目标是将身份验证ID存储在文档中。