constructor(workspace = TestWorkspace, options = null) {
this.options = options || Object.create(null);
this._onDidChangeWorkspaceName = new Emitter<void>();
this._onWillChangeWorkspaceFolders = new Emitter<IWorkspaceFoldersWillChangeEvent>();
this._onDidChangeWorkspaceFolders = new Emitter<IWorkspaceFoldersChangeEvent>();
this._onDidChangeWorkbenchState = new Emitter<WorkbenchState>();
}
getFolders(): IWorkspaceFolder[] {