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Screenshot 2022-11-16 at 23.48.47.png

very basic… but why this test code is not compiling on the `install` statement?
```    @Test
    fun testOptimizeRouter() = testApplication {
        val client = createClient {
            install(ContentNegotiation) {
                json()
            }
        }
        // omitted
     }```
Ktor 2.1.3
Kotlin 1.7.21
IDEA CE 2022.3 Beta (EAP)

because `install` matches the client as well as the server plugin dsl

<@U01JRLZH77T> not sure if I followed
this declaration is everywhere on Ktor's documentation and samples, what's is the point again that might be the problem?

`install` is used in the client config dsl as well as in the server config dsl. Because you use `application {` and inside this scope, you call `client {`, there is a mismatch because both have an `install` function.

I think the problem is simpler and you try to install server `ContentNegotiation`  plugin into client. Please check your imports.

<@U01BRS7CT6D> you nailed it… the import was pointing to the `server` plugin, additionally I had to added `ktor-client-content-negotiation` dependency to be able to use the client version of the plugin… a bit tricky tbh, but worked in the end.