jodd-core/src/main/java/jodd/util/collection/StringKeyedMapAdapter.java
@Override
	public Object put(final String key, final Object value) {
		entries = null;
		Object previous = get(key);
		setAttribute(key, value);
		return previous;
	}
@Override
	public Object put(final String key, final Object value) {
		entries = null;
		Object previous = get(key);
		setAttribute(key, value);
		return previous;
	}
Saves an attribute in the request.