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package org.spongepowered.common.data.property.store.item;

import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.FurnaceRecipes;
import org.spongepowered.api.data.property.item.SmeltableProperty;
import org.spongepowered.common.data.property.store.common.AbstractItemStackPropertyStore;

import java.util.Optional;

public class SmeltablePropertyStore extends AbstractItemStackPropertyStore<SmeltableProperty> {

    @Override
    protected Optional<SmeltableProperty> getFor(ItemStack itemStack) {
        return Optional.of(new SmeltableProperty(FurnaceRecipes.instance().getSmeltingResult(itemStack) != null));
    }
}

@@ -1575,17 +1575,16 @@
 tional;%0A
-%0A
 public c
@@ -1807,16 +1807,17 @@
 roperty(
+!
 FurnaceR
@@ -1866,16 +1866,18 @@
 ack)
- != null
+.isEmpty()
 ));%0A

fix SmeltableProperty using null check instead of isEmpty