import org.eclipse.core.runtime.preferences.AbstractPreferenceInitializer;
import org.osgi.service.prefs.BackingStoreException;
import org.osgi.service.prefs.Preferences;
import org.eclipse.core.runtime.preferences.AbstractPreferenceInitializer;
import org.osgi.service.prefs.BackingStoreException;
import org.osgi.service.prefs.Preferences;