src/vs/workbench/services/extensions/common/extensionHostManager.ts/ExtensionHostManager/_getProxy
class ExtensionHostManager:	private async _getProxy(): Promise<ExtHostExtensionServiceShape | null> {
		if (!this._proxy) {
			return null;
		}
		const p = await this._proxy;
		if (!p) {
			return null;
		}
		return p.value;
	}