// ...
  public static final Block CUSTOM_CROP = registerBlockOnly("custom_crop", CustomCropBlock::new, AbstractBlock.Settings.create().nonOpaque().noCollision().ticksRandomly().breakInstantly().sounds(BlockSoundGroup.CROP));
  
  // ...
  
  private static Block registerBlockOnly(String path, Function<AbstractBlock.Settings, Block> factory, AbstractBlock.Settings settings) {
    final Identifier identifier = Identifier.of("tutorial", path);
    final RegistryKey<Block> registryKey = RegistryKey.of(RegistryKeys.BLOCK, identifier);

    return Blocks.register(registryKey, factory, settings);
  }