MigrationSource.fromJson constructor
      
      MigrationSource.fromJson(
    
    
- Map json_
Implementation
MigrationSource.fromJson(core.Map json_)
    : this(
        hostPort: json_.containsKey('hostPort')
            ? json_['hostPort'] as core.String
            : null,
        referenceId: json_.containsKey('referenceId')
            ? json_['referenceId'] as core.String
            : null,
        sourceType: json_.containsKey('sourceType')
            ? json_['sourceType'] as core.String
            : null,
      );