Support sub collection about fake_cloud_firestore

[atn832]

Can you share the actual code for relsApi.allRelationships? I tried implementing something similar and it worked as expected. print(firebase.dump()) returned the following:

{
  "userProfiles": {
    "a": {
      "relationship": {
        "1": {
          "label": "relationship1"
        },
        "2": {
          "label": "relationship2"
        }
      }
    }
  }
}

[dfdgsdfg]

It's my mistake.

Everything is just fine.

Thanks for your superb works. 👍 👍 💯 🥇