class GatewayTimeoutException
extends HttpException
import { GatewayTimeoutException } from "https://deno.land/x/abc@v1.1.0/http_exception.ts";
x/abc/http_exception.ts>GatewayTimeoutException
import { GatewayTimeoutException } from "https://deno.land/x/abc@v1.1.0/http_exception.ts";