import java.util.Optional;
public class DataHolder {
private static DataHolder instance = new DataHolder();
private BundleContext bundleContext;
private RuntimeManager runtimeManager = null;
<BUG>private Optional<ConfigResolver> optConfigResolver = Optional.empty();
public static DataHolder getInstance() {</BUG>
return instance;
}
public BundleContext getBundleContext() {

import java.util.Optional;
public class DataHolder {
private static DataHolder instance = new DataHolder();
private BundleContext bundleContext;
private RuntimeManager runtimeManager = null;
private Optional<ConfigResolver> optConfigResolver = Optional.empty();
private Optional<ConfigProvider> optConfigProvider = Optional.empty();
public static DataHolder getInstance() {
return instance;
}
public BundleContext getBundleContext() {
