ItemStack repair check API

paper-api/src/main/java/org/bukkit/UnsafeValues.java

@@ -187,5 +187,15 @@ public interface UnsafeValues {
      * @return the server's protocol version
      */
     int getProtocolVersion();
+
+    /**
+     * Checks if an itemstack can be repaired with another itemstack.
+     * Returns false if either argument's type is not an item ({@link Material#isItem()}).
+     *
+     * @param itemToBeRepaired the itemstack to be repaired
+     * @param repairMaterial the repair material
+     * @return true if valid repair, false if not
+     */
+    public boolean isValidRepairItemStack(@org.jetbrains.annotations.NotNull ItemStack itemToBeRepaired, @org.jetbrains.annotations.NotNull ItemStack repairMaterial);
     // Paper end
 }