PropertyOrder.fromJson constructor
      
      PropertyOrder.fromJson(
    
    
- Map json_
 
Implementation
PropertyOrder.fromJson(core.Map json_)
    : this(
        direction: json_.containsKey('direction')
            ? json_['direction'] as core.String
            : null,
        property: json_.containsKey('property')
            ? PropertyReference.fromJson(
                json_['property'] as core.Map<core.String, core.dynamic>)
            : null,
      );