src/main/java/me/shedaniel/rei/api/IRecipeDisplay.java


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package me.shedaniel.rei.api;

import com.google.common.collect.Lists;
import net.minecraft.item.ItemStack;
import net.minecraft.recipe.Recipe;
import net.minecraft.util.Identifier;

import java.util.List;
import java.util.Optional;

public interface IRecipeDisplay<T extends Recipe> {
    
    Optional<T> getRecipe();

    List<List<ItemStack>> getInput();

    List<ItemStack> getOutput();

    default List<List<ItemStack>> getRequiredItems() {
        return Lists.newArrayList();
    }

    Identifier getRecipeCategory();

}