message: Move `IndividualMaterialCapacity()` to `protected` section
diff: @@ -60,11 +60,6 @@ public:
  return stringTable;
  }
  - /**
  - * Capacity of an individual type of refined resource
  - */
  - int IndividualMaterialCapacity() const { return storageCapacity() / 4; }
  -
  protected:
  std::array<int, 4> OreConversionDivisor{2, 2, 3, 3};
  @@ -78,6 +73,11 @@ protected:
  };
  }
  + /**
  + * Capacity of an individual type of refined resource
  + */
  + int IndividualMaterialCapacity() const { return storageCapacity() / 4; }
  +
  void think() override
  {
  if (isIdle() && storage() < storageCapacities())
  