read / write
Log the dirty widgets that are built each frame.
Combined with debugPrintBuildScope or debugPrintBeginFrameBanner, this
allows you to distinguish builds triggered by the initial mounting of a
widget tree (e.g. in a call to runApp) from the regular builds triggered
by the pipeline (see WidgetsBinding.beginFrame.
Combined with debugPrintScheduleBuildForStacks, this lets you watch a widget's dirty/clean lifecycle.