MapConverter<T> constructor Null safety

MapConverter<T>()

1. unself_local_database
2. unself_local_database
3. MapConverter<T>
4. MapConverter constructor

MapConverter class

1. Constructors
2. MapConverter
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. fromSql
8. noSuchMethod
9. toSql
10. toString
11. Operators
12. operator ==