Логично..)
Только я скопировал и тут ошибка:
public boolean trySpawnPortal(World worldIn, BlockPos pos)
{
BlockPortalTSGW.Size blockportal$size = new BlockPortalTSGW.Size(worldIn, pos, EnumFacing.Axis.X);
if (blockportal$size.isValid() && blockportal$size.portalBlockCount == 0 && !net.minecraftforge.event.ForgeEventFactory.onTrySpawnPortal(worldIn, pos, blockportal$size))
{
blockportal$size.placePortalBlocks();
return true;
}