Can be an assert.

Author: fnuecke

src/main/java/li/cil/oc2/common/blockentity/CreativeEnergyBlockEntity.java

@@ -20,9 +20,7 @@ public CreativeEnergyBlockEntity(final BlockPos pos, final BlockState state) {
 
     @Override
     public void serverTick() {
-        if (level == null) {
-            return;
-        }
+        assert level != null;
 
         for (final Direction side : SIDES) {
             final BlockPos neighborPos = getBlockPos().relative(side);