src/vs/editor/contrib/folding/browser/folding.ts/UnfoldAllRegionsExceptAction/invoke
class UnfoldAllRegionsExceptAction:	invoke(_foldingController: FoldingController, foldingModel: FoldingModel, editor: ICodeEditor): void {
		const selectedLines = this.getSelectedLines(editor);
		setCollapseStateForRest(foldingModel, false, selectedLines);
	}