``` val mapper: ObjectMapper by kodein.instance&lt...

# kodein

[Vinicius Carvalho]

val mapper: ObjectMapper by kodein.instance<ObjectMapper>()

        val function = System.getenv("FUNCTION_NAME")
        val fn = kodein.direct.allInstances<Any>(tag = function)[0]


        val arg = mapper.readValue<Any>(input, mapper.typeFactory.constructType(fn::class.declaredFunctions.first().parameters[1].type.javaType))

        val fx = fn as Function1<Any, *>

        mapper.writeValue(output, fx(arg))