Ktor Server Playground Default Route

[sangeetds]

Hello!

I was using the graphql-kotlin-spring-server with Ktor. I saw in the ktor example that the default route for the playground was being handled manually, and a custom HTML page was being returned. But I observed that the spring server had few default routes already pre-configured. I wanted to ask whether there are simpler ways to generate the default routes in Ktor. Do I need to manually handle default endpoints? If yes, I would like to know if there's some documentation from where I can get more info about setting them up.