RuntimeContext constructor Null safety

1. conduit_runtime
2. runtime
3. RuntimeContext
4. RuntimeContext constructor

RuntimeContext class

1. Constructors
2. RuntimeContext
3. Properties
4. hashCode
5. runtimes
6. runtimeType
7. Methods
8. coerce
9. noSuchMethod
10. toString
11. Operators
12. operator ==
13. operator []
14. Static properties
15. current