Remove Precondition on name for AttributeModifier

Vanilla allows empty names

Spigot-API-Patches/0154-Remove-Precondition-on-name-for-AttributeModifier.patch

@@ -0,0 +1,27 @@
+From 4797cb3399e7aef4da06bce1cb8534f166a68992 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sat, 22 Sep 2018 18:41:01 -0400
+Subject: [PATCH] Remove Precondition on name for AttributeModifier
+
+Vanilla allows empty names
+
+diff --git a/src/main/java/org/bukkit/attribute/AttributeModifier.java b/src/main/java/org/bukkit/attribute/AttributeModifier.java
+index a3a69ffa4..4d1691be0 100644
+--- a/src/main/java/org/bukkit/attribute/AttributeModifier.java
++++ b/src/main/java/org/bukkit/attribute/AttributeModifier.java
+@@ -29,10 +29,10 @@ public class AttributeModifier implements ConfigurationSerializable {
+ 
+     public AttributeModifier(UUID uuid, String name, double amount, Operation operation, EquipmentSlot slot) {
+         Validate.notNull(uuid, "UUID cannot be null");
+-        Validate.notEmpty(name, "Name cannot be empty");
++        //Validate.notEmpty(name, "Name cannot be empty"); // Paper
+         Validate.notNull(operation, "Operation cannot be null");
+         this.uuid = uuid;
+-        this.name = name;
++        this.name = name != null ? name : ""; // Paper
+         this.amount = amount;
+         this.operation = operation;
+         this.slot = slot;
+-- 
+2.19.0
+