editPageParams method
Ensures parameters exist on an existing page without recreating it.
Implementation
void editPageParams(
String name,
void Function(BrownfieldParamEditor params) build,
) {
final editor = BrownfieldParamEditor._(
kind: _WidgetClassScopeKind.page,
widgetClassName: name,
);
build(editor);
raw((project) => _applyBrownfieldParamEdit(project, editor));
}