FilterSpec.fromJson constructor
      
      FilterSpec.fromJson(
    
    
- Map json_
Implementation
FilterSpec.fromJson(core.Map json_)
  : this(
      columnIndex: json_['columnIndex'] as core.int?,
      dataSourceColumnReference:
          json_.containsKey('dataSourceColumnReference')
              ? DataSourceColumnReference.fromJson(
                json_['dataSourceColumnReference']
                    as core.Map<core.String, core.dynamic>,
              )
              : null,
      filterCriteria:
          json_.containsKey('filterCriteria')
              ? FilterCriteria.fromJson(
                json_['filterCriteria']
                    as core.Map<core.String, core.dynamic>,
              )
              : null,
    );