fix method
Implementation
Future<void> fix(String filename, {bool? apply}) async {
var ast = parseFile(
path: filename,
featureSet: FeatureSet.latestLanguageVersion(),
);
var patcher = ImportsPatcher(this, filename: filename);
patcher.visit(ast.unit);
if (patcher.hasChanges && (apply ?? false)) {
print("[pubtidy] ${p.relative(filename, from: pkgRoot.path)} fixed.");
await File(filename).writeAsBytes(
patcher.apply(ast.content.codeUnits),
);
}
}