Lazy update

src/main/kotlin/net/axay/kspigot/main/KSpigot.kt

@@ -1,5 +1,6 @@
 package net.axay.kspigot.main
 
+import net.axay.kspigot.kotlinextensions.closeIfInitialized
 import net.axay.kspigot.runnables.KRunnableHolder
 import org.bukkit.plugin.java.JavaPlugin
 
@@ -18,7 +19,10 @@ import org.bukkit.plugin.java.JavaPlugin
  */
 abstract class KSpigot : JavaPlugin() {
 
-    val kRunnableHolder = KRunnableHolder()
+    // lazy properties
+    private val kRunnableHolderProperty = lazy { KRunnableHolder() }
+
+    val kRunnableHolder by kRunnableHolderProperty
 
     /**
      * Called when the plugin was loaded
@@ -44,8 +48,12 @@ abstract class KSpigot : JavaPlugin() {
     }
 
     final override fun onDisable() {
+
         shutdown()
-        kRunnableHolder.shutdown()
+
+        // avoid unnecessary load of lazy properties
+        kRunnableHolderProperty.closeIfInitialized()
+
     }
 
 }

src/main/kotlin/net/axay/kspigot/runnables/KSpigotRunnables.kt

@@ -7,7 +7,7 @@ import org.bukkit.Bukkit
 import org.bukkit.plugin.Plugin
 import org.bukkit.scheduler.BukkitRunnable
 
-class KRunnableHolder {
+class KRunnableHolder : AutoCloseable {
 
     /**
      * [BukkitRunnable] for tracking the responsible runnable.
@@ -17,7 +17,7 @@ class KRunnableHolder {
      */
     private val runnableEndCallbacks = HashMap<BukkitRunnable, Pair<() -> Unit, Boolean>>()
 
-    fun shutdown() {
+    override fun close() {
         runnableEndCallbacks.values.forEach { if (it.second) it.first.invoke() }
         runnableEndCallbacks.clear()
     }