[1.15.2] Making a GUI menu appear

Block Code:

package ahndreklicyri.highgentech.common.blocks;

import ahndreklicyri.highgentech.common.tileentities.tingen.FurnGenTin_TE;
import net.minecraft.block.BlockState;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ActionResultType;
import net.minecraft.util.Hand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.BlockRayTraceResult;
import net.minecraft.world.IBlockReader;
import net.minecraft.world.World;

public class FurnGenTin extends RotBlock{
    public FurnGenTin(Properties properties) {
        super(properties);
    }

    // For some reason, hasTileEntity has TWO versions, and only this one works.
    // Don't use the one without the BlockState argument!
    @Override
    public boolean hasTileEntity(BlockState State) {
        return true;
    }

    // Tile Entity to be created when Block is placed
    @Override
    public TileEntity createTileEntity(BlockState state, IBlockReader world) {
        return new FurnGenTin_TE();
    }

    // What this Block does on a RIGHT click
    @Override
    public ActionResultType onBlockActivated(BlockState state,World worldIn, BlockPos pos, PlayerEntity player, Hand handIn, BlockRayTraceResult hit) {
        if(!worldIn.isRemote){
            final TileEntity TE = worldIn.getTileEntity(pos);
            if(TE instanceof FurnGenTin_TE){
                // I'm guessing I would call
                // TE.createMenu() here?
                LOGGER.info("Tapped a Tin Furnace Generator!");
            }
        }
        return ActionResultType.SUCCESS;
    }

    // What this Block does when replaced (aka Broken)
    @Override
    public void onReplaced(BlockState state, World worldIn, BlockPos pos, BlockState newState, boolean isMoving) {
        if(state.getBlock() != newState.getBlock()){
            final TileEntity TE = worldIn.getTileEntity(pos);
            if(TE instanceof FurnGenTin_TE){
                LOGGER.info("Destroyed a Tin Furnace Generator!");
            }
            // Unsure if this is needed, but just to be safe...
            super.onReplaced(state, worldIn, pos, newState, isMoving);
        }
    }
}

Tile Entity Code:

package ahndreklicyri.highgentech.common.tileentities.tingen;

import ahndreklicyri.highgentech.common.DeferredRegistry;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.entity.player.PlayerInventory;
import net.minecraft.inventory.container.Container;
import net.minecraft.inventory.container.INamedContainerProvider;
import net.minecraft.nbt.CompoundNBT;
import net.minecraft.tileentity.ITickableTileEntity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.text.ITextComponent;

public class FurnGenTin_TE extends TileEntity implements INamedContainerProvider,ITickableTileEntity {

    // Set up the super and such here
    public FurnGenTin_TE() {
        super(DeferredRegistry.FURN_GEN_TIN_TE.get());
    }

    // Required in order to Tick the block
    @Override
    public void tick() {
        if(!world.isRemote){
            // Code to run per tick goes here
        }
    }

    // Write the data when the chunk is unloaded
    // Unused for now, but here for future use
    @Override
    public CompoundNBT write(CompoundNBT compound) {
        super.write(compound);
        return compound;
    }

    // Read the data when the chunk is loaded
    // Unused for now, but here for future use
    @Override
    public void read(CompoundNBT compound) {
        super.read(compound);
    }

    // Mark the TileEntity as Dirty so the game correctly saves the data!
    // CALL THIS WHEN ANY DATA CHANGES IN THE TILE ENTITY.
    // Unused for now, but here for future use
    @Override
    public void markDirty() {
        super.markDirty();
    }
    
    // Pass here is what I am struggling with what I am suppose to do.
    @Override
    public ITextComponent getDisplayName() {
        // I'm guessing this is the name (internal?) of the Display?
        return null;
    }
    
    @Override
    public Container createMenu(int p_createMenu_1_, PlayerInventory playerInv, PlayerEntity PlayerEnt) {
        // I know I should return a container here but how exactly...?
        return null;
    }
}

Container Code:

package ahndreklicyri.highgentech.common.tileentities.tingen;

import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.inventory.container.Container;
import net.minecraft.inventory.container.ContainerType;

// Not quite sure what I am suppose to do in this container class.

public class FurnGenTin_CON extends Container {

    protected FurnGenTin_CON(ContainerType<?> type, int id) {
        super(type, id);
    }

    // Allows the player to interact with this Container
    @Override
    public boolean canInteractWith(PlayerEntity playerIn) {
        return true;
    }
}