RuntimeGenerator constructor Null safety

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

RuntimeGenerator class

1. Constructors
2. RuntimeGenerator
3. Properties
4. hashCode
5. loaderSource
6. pubspecSource
7. runtimeType
8. Methods
9. addRuntime
10. noSuchMethod
11. toString
12. writeTo
13. Operators
14. operator ==