Exception while passing own moshiAdapters to NetworkingRouterConfig

I need to pass my own JsonAdapter that implements the MoshiAdapterFactory interface to the NetworkingRouterConfig() then it throws an exception as soon as it get used.

UserJsonAdapter.kt:

class UserJsonAdapter: MoshiAdapterFactory {
    private lateinit var borsh: Borsh

    override fun create(borsh: Borsh): Object {
        this.borsh = borsh
        return Object()
    }

    @FromJson
    fun fromJson(rawData: Any): Buffer<User> = Buffer.create(borsh = borsh, rawData = rawData, clazz = User::class.java)
}

Solana initialization:

Solana(
           router = OkHttpNetworkingRouter(
                endpoint = RPCEndpoint.mainnetBetaSolana,
                httpClient = get(),
                config = NetworkingRouterConfig(rules = listOf(UserRule()), moshiAdapters = listOf(UserJsonAdapter()))
            )
        )

Exception: java.lang.IllegalArgumentException: Expected at least one @ToJson or @FromJson method on java.lang.Object at com.squareup.moshi.AdapterMethodsFactory.get(AdapterMethodsFactory.java:153) at com.squareup.moshi.Moshi$Builder.add(Moshi.java:223) at com.solana.networking.OkHttpNetworkingRouter$moshi$2.invoke(NetworkingRouter.kt:68) at com.solana.networking.OkHttpNetworkingRouter$moshi$2.invoke(NetworkingRouter.kt:60)

metaplex-foundation / SolanaKT

Exception while passing own moshiAdapters to NetworkingRouterConfig #108