enable generic injections and fix resulting errors

gradle.properties

@@ -25,6 +25,10 @@ developmentEnvironmentUserName = Developer
 # See https://github.com/bsideup/jabel for details on how this works.
 enableModernJavaSyntax = true
 
+# Enables injecting missing generics into the decompiled source code for a better coding experience
+# Turns most publicly visible List, Map, etc. into proper List<Type>, Map<K, V> types
+enableGenericInjection = true
+
 # Generate a class with a String field for the mod version named as defined below.
 # If generateGradleTokenClass is empty or not missing, no such class will be generated.
 # If gradleTokenVersion is empty or missing, the field will not be present in the class.

src/main/java/serverutils/command/CmdLeaderboard.java

@@ -30,7 +30,7 @@ public CmdLeaderboard() {
     @Override
     public List<String> addTabCompletionOptions(ICommandSender sender, String[] args) {
         if (args.length == 1) {
-            return getListOfStringsFromIterableMatchingLastWord(args, ServerUtilitiesCommon.LEADERBOARDS.keySet());
+            return matchFromIterable(args, ServerUtilitiesCommon.LEADERBOARDS.keySet());
         }
 
         return super.addTabCompletionOptions(sender, args);

src/main/java/serverutils/handlers/ServerUtilitiesServerEventHandler.java

@@ -4,6 +4,7 @@
 import java.util.Map;
 import java.util.regex.Pattern;
 
+import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.stats.StatList;
 import net.minecraft.util.ChatComponentText;
@@ -260,9 +261,11 @@ public void onWorldTick(TickEvent.WorldTickEvent event) {
             }
 
             if (ServerUtilitiesConfig.world.show_playtime && event.world.getTotalWorldTime() % 20L == 7L) {
-                for (EntityPlayerMP player : (List<EntityPlayerMP>) event.world.playerEntities) {
-                    new MessageUpdatePlayTime(player.func_147099_x().writeStat(StatList.minutesPlayedStat))
-                            .sendTo(player);
+                for (EntityPlayer player : event.world.playerEntities) {
+                    if (player instanceof EntityPlayerMP playerMP) {
+                        new MessageUpdatePlayTime(playerMP.func_147099_x().writeStat(StatList.minutesPlayedStat))
+                                .sendTo(playerMP);
+                    }
                 }
             }
         }