Documents stored in the cloud arealso stored as a downloaded copy in each device $($computer$,$ tablet, phone$).$ If devices are notified of any changes made in the cloud copy, the copies on the devices must be refreshed$/$updated$.$ At the same time, when there are changes in the copies on the devices, they must be loaded into the cloud insuch a way that they do not override each others. Which design pattern could be applied? draw uml class diagram. Following patterns will be use:decoratorAbstract factoryFactoryTemplateCompositeObserverStrategyMemento