referenceStrength property
referenceStrength Strength expressed in terms of a reference substance. For when the ingredient strength is additionally expressed as equivalent to the strength of some other closely related substance (e.g. salt vs. base). Reference strength represents the strength (quantitative composition) of the active moiety of the active substance. There are situations when the active substance and active moiety are different, therefore both a strength and a reference strength are needed.
Implementation
List<IngredientReferenceStrength>? get referenceStrength =>
throw _privateConstructorUsedError;