n class="keyword">val </span><span class="identifier">produces</span><span class="symbol">: </span><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-map/index.html"><span class="identifier">MutableMap</span></a><span class="symbol">&lt;</span><a href="../../kotcity.data/-tradeable/index.html"><span class="identifier">Tradeable</span></a><span class="symbol">,</span>&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html"><span class="identifier">Int