FirebaseUtils constructor Null safety

1. baguette
2. FirebaseUtils
3. FirebaseUtils
4. FirebaseUtils constructor

FirebaseUtils class

1. Constructors
2. FirebaseUtils
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static methods
12. getFirebaseOptions