Priority GUI improvements (#3592)

src/main/java/appeng/fluids/tile/TileFluidInterface.java

@@ -23,12 +23,14 @@ import java.util.EnumSet;
 
 import javax.annotation.Nullable;
 
+import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.EnumFacing;
 import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.items.IItemHandler;
 
+import appeng.api.AEApi;
 import appeng.api.config.Upgrades;
 import appeng.api.networking.IGridNode;
 import appeng.api.networking.events.MENetworkChannelsChanged;
@@ -41,6 +43,7 @@ import appeng.api.util.AECableType;
 import appeng.api.util.AEPartLocation;
 import appeng.api.util.DimensionalCoord;
 import appeng.api.util.IConfigManager;
+import appeng.core.sync.GuiBridge;
 import appeng.fluids.helper.DualityFluidInterface;
 import appeng.fluids.helper.IFluidInterfaceHost;
 import appeng.helpers.IPriorityHost;
@@ -172,4 +175,16 @@ public class TileFluidInterface extends AENetworkTile implements IGridTickable,
 	{
 		return this.duality.getInventoryByName( name );
 	}
+	
+	@Override
+	public ItemStack getItemStackRepresentation()
+	{
+		return AEApi.instance().definitions().blocks().fluidIface().maybeStack( 1 ).orElse( ItemStack.EMPTY );
+	}
+
+	@Override
+	public GuiBridge getGuiBridge()
+	{
+		return GuiBridge.GUI_FLUID_INTERFACE;
+	}
 }