DeepSource

DO reference all public properties in debug method implementations.

Implementers of Diagnosticable should reference all public properties in a debugFillProperties(...) or debugDescribeChildren(...) method implementation to improve debuggability at runtime.

Public properties are defined as fields and getters that are

not package-private (e.g., prefixed with _)
not static or overriding
not themselves Widgets or collections of Widgets

In addition, the "debug" prefix is treated specially for properties in Flutter. For the purposes of diagnostics, a property foo and a prefixed property debugFoo are treated as effectively describing the same property and it is sufficient to refer to one or the other.

BAD:

class Absorber extends Widget {
  bool get absorbing => _absorbing;
  bool _absorbing;
  bool get ignoringSemantics => _ignoringSemantics;
  bool _ignoringSemantics;
  @override
  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
    super.debugFillProperties(properties);
    properties.add(DiagnosticsProperty<bool>('absorbing', absorbing));
    // Missing reference to ignoringSemantics
  }
}

GOOD:

class Absorber extends Widget {
  bool get absorbing => _absorbing;
  bool _absorbing;
  bool get ignoringSemantics => _ignoringSemantics;
  bool _ignoringSemantics;
  @override
  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
    super.debugFillProperties(properties);
    properties.add(DiagnosticsProperty<bool>('absorbing', absorbing));
    properties.add(DiagnosticsProperty<bool>('ignoringSemantics', ignoringSemantics));
  }
}

Dart Analyze

DO reference all public properties in debug methods DRT-W1016