Steps constructor
      
      Steps({ 
    
    
- num? distance,
- num? duration,
- String? geometry,
- String? name,
- String? mode,
- Maneuver? maneuver,
- List<VoiceInstructions> ? voiceInstructions,
- List<BannerInstructions> ? bannerInstructions,
- String? drivingSide,
- num? weight,
- List<Intersections> ? intersections,
- String? exits,
Implementation
Steps(
    {this.distance,
    this.duration,
    this.geometry,
    this.name,
    this.mode,
    this.maneuver,
    this.voiceInstructions,
    this.bannerInstructions,
    this.drivingSide,
    this.weight,
    this.intersections,
    this.exits});