Paper/patches/server/0091-remove-null-possibility-for-getServer-singleton.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 28 Apr 2016 00:57:27 -0400
Subject: [PATCH] remove null possibility for getServer singleton

to stop IDE complaining about potential NPE

diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 199401eb1a0722d84700681a0a5cba67953c6bec..9fb842e86aa6302259a98e5352da5296dbd07054 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -186,6 +186,7 @@ import org.spigotmc.SlackActivityAccountant; // Spigot
 
 public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTask> implements CommandSource, AutoCloseable {
 
+    private static MinecraftServer SERVER; // Paper
     public static final Logger LOGGER = LogUtils.getLogger();
     public static final String VANILLA_BRAND = "vanilla";
     private static final float AVERAGE_TICK_TIME_SMOOTHING = 0.8F;
@@ -321,6 +322,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
 
     public MinecraftServer(OptionSet options, DataPackConfig datapackconfiguration, DynamicOps<Tag> registryreadops, Thread thread, LevelStorageSource.LevelStorageAccess convertable_conversionsession, PackRepository resourcepackrepository, WorldStem worldstem, Proxy proxy, DataFixer datafixer, @Nullable MinecraftSessionService minecraftsessionservice, @Nullable GameProfileRepository gameprofilerepository, @Nullable GameProfileCache usercache, ChunkProgressListenerFactory worldloadlistenerfactory) {
         super("Server");
+        SERVER = this; // Paper - better singleton
         this.metricsRecorder = InactiveMetricsRecorder.INSTANCE;
         this.profiler = this.metricsRecorder.getProfiler();
         this.onMetricsRecordingStopped = (methodprofilerresults) -> {
@@ -2310,7 +2312,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
 
     @Deprecated
     public static MinecraftServer getServer() {
-        return (Bukkit.getServer() instanceof CraftServer) ? ((CraftServer) Bukkit.getServer()).getServer() : null;
+        return SERVER; // Paper
     }
     // CraftBukkit end