@Override
        public int hashCode() {
            int hash = 7;
            hash = 23 * hash + Objects.hashCode(viewId);
            hash = 23 * hash + Objects.hashCode(clientId);
            return hash;
        }
Gets multiview state attached to a component in a specific view.

@param viewId viewId of a page
@param clientId clientId of a component
@param <T> bean state generic

@return multiview state bean attached to a component or null
primefaces/src/main/java/org/primefaces/PrimeFaces.java