TANKS_liquidamount

--theoriginalbit's 1.5.2-1.6.4 compatible function for checking liquid amount
local function getLiquidAmount(side, tankSide)
  local p = peripheral.wrap(side or "top")
  local getTankInfo = p.getTanks or p.getTankInfo
  local tankInfo = getTankInfo(tankSide or "unknown")
  local _,tank = next(tankInfo)
  return type(tank) == "table" and tank.amount or nil
end