drools-eclipse/org.kie.eclipse.navigator/src/main/java/org/kie/eclipse/navigator/preferences/JsonPreferenceStore.java
public boolean contains(String name) {
		JsonValue value = object.get(name);
		return value!=null;
	}
public boolean contains(String name) {
		JsonValue value = object.get(name);
		return value!=null;
	}
{@inheritDoc}