src/vs/workbench/services/workspaces/browser/abstractWorkspaceEditingService.ts/AbstractWorkspaceEditingService/addFolders
class AbstractWorkspaceEditingService:	addFolders(foldersToAddCandidates: IWorkspaceFolderCreationData[], donotNotifyError: boolean = false): Promise<void> {

		// Normalize
		const foldersToAdd = foldersToAddCandidates.map(folderToAdd => ({ uri: removeTrailingPathSeparator(folderToAdd.uri), name: folderToAdd.name }));

		return this.doAddFolders(foldersToAdd, undefined, donotNotifyError);
	}