org.bukkit.inventory/ItemStack///PointingToDeclaration/">ItemStack</span>, changeToGUICallback: () -&gt; <a href="../../net.axay.kspigot.inventory/-inventory-g-u-i/index.html">InventoryGUI</a>&lt;*&gt;, changeToPageInt: <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>?, onChange: (<a href="../../net.axay.kspigot.inventory/-inventory-g-u-i-click-event/index.html">InventoryGUIClickEvent</a>&lt;<a href="index.html">T</a>&gt;) -&gt; <a href="https://kotlinlang.org/api/latest