IFluidHandler.java

package net.minecraftforge.fluids.capability;

import net.minecraftforge.fluids.*;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public interface IFluidHandler
{
    int getSlots();

    @Nullable
    FluidStack getContents(int slot);

    int getCapacity(int slot);

    boolean canFill(int slot);

    boolean canDrain(int slot);

    default boolean canFillFluidType(int slot, @Nonnull FluidStack fluidStack) {
      return canFill(slot);
    }

    default boolean canDrainFluidType(int slot, @Nonnull FluidStack fluidStack) {
      return canDrain(slot);
    }

    @Nonnull
    FluidStack fill(@Nonnull FluidStack stack, boolean simulate);

    @Nonnull
    FluidStack fill(int slot, @Nonnull FluidStack stack, boolean simulate);

    @Nullable
    FluidStack drain(int slot, int amount, boolean simulate);

    @Nullable
    FluidStack drain(int slot, @Nonnull FluidStack stack, boolean simulate);

}