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kotlinlang

is a closure being passed to the 'install' function?

Check this:
<https://kotlinlang.org/docs/reference/lambdas.html#higher-order-functions>

The main idea is that when a the last parameter of a kotlin function is a callback/lambda/closure, you can put curly brackets outside

```
install(Routing, {
  get("/") {
    call.respondText("Hello, World!")
  }
}) 
```

It is equivalent to this, but with a cleaner syntax, since you don’t have to put the `)` after the `}` and do not have a `,` at all.

That clarifies it perfectly. Thanks a lot!