docs: public Resource subtractAbsolute(Resource other) {
      double cpuDifference = this.getCpu() - other.getCpu();
      double extraCpu = Math.max(0, cpuDifference);
      ByteAmount ramDifference = this.getRam().minus(other.getRam());
      ByteAmount extraRam = ByteAmount.ZERO.max(ramDifference);
      ByteAmount diskDifference = this.getDisk().minus(other.getDisk());
      ByteAmount extraDisk = ByteAmount.ZERO.max(diskDifference);
      return new Resource(extraCpu, extraRam, extraDisk);
    }