context.dependOnInheritedWidgetOfExactType has changed Syntax

[Wissperwind]

Hi,
Can you please update your Demo project to working condition?
if you import from pub dev:
TreeView has no parameter startExpanded
and there is no class TreeViewChild

also please have a look at the new syntax at
context.dependOnInheritedWidgetOfExactType
See here: https://stackoverflow.com/questions/59304242/inheritfromwidgetofexacttype-is-deprecated-use-dependoninheritedwidgetofexacttyp

[Wissperwind]

So, to everyone else, I advise downloading the code and fixing context.dependOnInheritedWidgetOfExactType