SortingEnforcement enum Null safety
Indicates how the sorting requirement for GpsPointsCollection should behave.
SortingEnforcement.notRequired means that the collection will accept elements in non-sorted order. SortingEnforcement.skipWrongItems means that the collection will not add any elements that violate the sorting order, but not throw an exception. SortingEnforcement.throwIfWrongItems means that the list will throw an exception if trying to add elements that violate the sorting order.