src/vs/platform/windows/electron-main/window.ts/CodeWindow/getMarketplaceHeaders
class CodeWindow:	private getMarketplaceHeaders(): Promise<object> {
		if (!this.marketplaceHeadersPromise) {
			this.marketplaceHeadersPromise = resolveMarketplaceHeaders(
				this.productService.version,
				this.productService,
				this.environmentMainService,
				this.configurationService,
				this.fileService,
				this.applicationStorageMainService,
				this.telemetryService);
		}

		return this.marketplaceHeadersPromise;
	}