detailString property
detailString The target value of the measure to be achieved to signify fulfillment of the goal, e.g. 150 pounds or 7.0%, or in the case of pharmaceutical quality - NMT 0.6%, Clear solution, etc. Either the high or low or both values of the range can be specified. When a low value is missing, it indicates that the goal is achieved at any value at or below the high value. Similarly, if the high value is missing, it indicates that the goal is achieved at any value at or above the low value.
Implementation
String? get detailString => throw _privateConstructorUsedError;