Currently a.b.c will thrown an error in expression if a is null. To suppress null dereferencing we should support a?.b.c which would short circuit further evaluation if a is null. In this way we could have explicit notation which would show which values could be null.
Syntax to fallow dart proposal: https://github.com/gbracha/nullAwareOperators/blob/master/README.md