@Override
public int fill(ForgeDirection from, FluidStack resource, boolean doFill) {
if (resource == null) return 0;
TileEntityBottlingMachine master = master();
if (master != null && canFill(from, resource.getFluid()))
return master.fill(from, resource, doFill);
int fill = tank.fill(resource, doFill);
if (fill > 0) {
markDirty();
worldObj.markBlockForUpdate(xCoord, yCoord, zCoord);
}
return fill < 0 ? 0 : fill;
}
