console.error: "react-native-maps" AirGoogleMaps dir must be added to your xCode project

console.error: "react-native-maps" AirGoogleMaps dir must be added to your xCode project

I got this error when I am trying to test the example in react-native-maps module.

Github: https://github.com/airbnb/react-native-maps/tree/master/example

It is obvious that I should add the dir the to my Xcode project but I don't know how to add them.

May I have an example of adding dir to a Xcode project?

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