src/vs/workbench/contrib/debug/browser/extensionHostDebugService.ts/BrowserExtensionHostDebugService/findArgument
class BrowserExtensionHostDebugService:	private findArgument(key: string, args: string[]): string | undefined {
		for (const a of args) {
			const k = `--${key}=`;
			if (a.indexOf(k) === 0) {
				return a.substr(k.length);
			}
		}

		return undefined;
	}