add service brand to terminal service

src/vs/workbench/api/common/extHostTerminalService.ts

@@ -11,6 +11,8 @@ import { createDecorator } from 'vs/platform/instantiation/common/instantiation'
 
 export interface IExtHostTerminalService extends ExtHostTerminalServiceShape {
 
+	_serviceBrand: any;
+
 	activeTerminal: vscode.Terminal | undefined;
 	terminals: vscode.Terminal[];
 

src/vs/workbench/api/node/extHostTerminalService.ts

@@ -199,6 +199,9 @@ export class ExtHostTerminal extends BaseExtHostTerminal implements vscode.Termi
 }
 
 export class ExtHostTerminalService implements IExtHostTerminalService, ExtHostTerminalServiceShape {
+
+	readonly _serviceBrand: any;
+
 	private _proxy: MainThreadTerminalServiceShape;
 	private _activeTerminal: ExtHostTerminal | undefined;
 	private _terminals: ExtHostTerminal[] = [];