src/vs/workbench/contrib/bulkEdit/browser/preview/bulkEditTree.ts/BulkEditDataSource/hasChildren
class BulkEditDataSource:	hasChildren(element: BulkFileOperations | BulkEditElement): boolean {
		if (element instanceof FileElement) {
			return element.edit.textEdits.length > 0;
		}
		if (element instanceof TextEditElement) {
			return false;
		}
		return true;
	}