coreValue property

Implementation

@visibleForTesting
int get coreValue {
  switch (this) {
    case notAllowed:
      return 0;
    case allowedAtDeadEnds:
      return 1;
    case allowedAtIntersections:
      return 2;
    case allowedAtDeadEndsAndIntersections:
      return 3;
  }
}