$Attribution.fromJson constructor
      
      $Attribution.fromJson(
    
    
- Map json_
Implementation
$Attribution.fromJson(core.Map json_)
  : this(numIntegralSteps: json_['numIntegralSteps'] as core.int?);$Attribution.fromJson(core.Map json_)
  : this(numIntegralSteps: json_['numIntegralSteps'] as core.int?);