FutureUtils constructor Null safety

1. baguette
2. FutureUtils
3. FutureUtils
4. FutureUtils constructor

FutureUtils class

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