toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (avoidFerries != null) 'avoidFerries': avoidFerries!,
if (avoidHighways != null) 'avoidHighways': avoidHighways!,
if (avoidIndoor != null) 'avoidIndoor': avoidIndoor!,
if (avoidTolls != null) 'avoidTolls': avoidTolls!,
};