getUnit method Null safety

dynamic getUnit(
  1. String nutrientId
)

Returns the nutrient Unit, after possible alterations.

Implementation

Unit getUnit(String nutrientId) {
  nutrientId = _fixNutrientId(nutrientId);
  switch (nutrientId) {
    case _energyId:
    case _energyKJId:
      return Unit.KJ;
    case _energyKCalId:
      return Unit.KCAL;
    default:
      return _units[nutrientId] ?? _getDefaultUnit(nutrientId) ?? Unit.G;
  }
}