src/vs/platform/extensionManagement/node/extensionSignatureVerificationService.ts/ExtensionSignatureVerificationService/vsceSign
class ExtensionSignatureVerificationService:	private vsceSign(): Promise<typeof vsceSign> {
		if (!this.moduleLoadingPromise) {
			this.moduleLoadingPromise = new Promise(
				(resolve, reject) => require(
					['node-vsce-sign'],
					async (obj) => {
						const instance = <typeof vsceSign>obj;

						return resolve(instance);
					}, reject));
		}

		return this.moduleLoadingPromise;
	}