/** Updates the flow for the BlockFlowing object. */
 private void updateFlow(World par1World, int par2, int par3, int par4) {
   int var5 = par1World.getBlockMetadata(par2, par3, par4);
   par1World.setBlockAndMetadata(par2, par3, par4, LAPI.getPairedBlockID(this.blockID), var5);
   par1World.markBlockRangeForRenderUpdate(par2, par3, par4, par2, par3, par4);
 }