A more explicit example of the firestore-one-to-one extension

[yamankatby]

💡

The Country/Capital example is not an example that can explain the extension easily, find some more explicit examples for the extension.

🗺️ Roadmap

• Update the firestore-one-to-one extension example in the example fields of the extension params #49
• Add an example to the description in the README of the firestore-one-to-one extension #50
• Create a new video for the firestore-one-to-one extension using the new example #51