debugVisibilityProperties method
Implementation
void debugVisibilityProperties(DiagnosticPropertiesBuilder properties) {
  properties.add(DiagnosticsProperty<ContentVisibility>('contentVisibility', renderStyle.contentVisibility));
}void debugVisibilityProperties(DiagnosticPropertiesBuilder properties) {
  properties.add(DiagnosticsProperty<ContentVisibility>('contentVisibility', renderStyle.contentVisibility));
}