loadFontFamilies method
Implementation
Future<List<String>> loadFontFamilies() async {
final file = File(configFilePath);
final contents = await file.readAsString();
final yamlMap = loadYaml(contents) as YamlMap?;
if (yamlMap == null || !yamlMap.containsKey('fonts')) {
throw CopierException("Invalid configuration file `$configFilePath`");
}
final fonts = yamlMap['fonts'] as List<dynamic>;
return List<String>.from(fonts);
}