toModelString method
Implementation
String toModelString() => '''
abstract class $className {
${assets.map((AssetItem item) => ' ${item.toModelString()}').join('\n')}
}
class ${AssetItem.className} {
final String path;
const ${AssetItem.className}(
this.path,
);
}
class ${ImageAssetItem.className} extends ${AssetItem.className} {
final int width;
final int height;
const ${ImageAssetItem.className}(
super.path,
this.width,
this.height,
);
}
''';