public KeyValueStoreUpdate update(String key, String value) {
		actions.add(new Update(key, value));
		return this;
	}
public KeyValueStoreUpdate update ( String key , String value ) { actions . add ( new Update ( key , value ) ) ; return this ; }
Adds a new update action to the event.

@param key the key
@param value the value
@return the event for easy chaining