toJson method Null safety

Map<String, dynamic> toJson()

Implementation

core.Map<core.String, core.dynamic> toJson() => {
      if (height != null) 'height': height!,
      if (iab != null) 'iab': iab!,
      if (id != null) 'id': id!,
      if (kind != null) 'kind': kind!,
      if (width != null) 'width': width!,
    };