@Deprecated
    public static <PE extends ExtensionElement> PE packetExtensionfromCollection(
            Collection<ExtensionElement> collection, String element,
            String namespace) {
        return extensionElementFrom(collection, element, namespace);
    }
@ Deprecated public static < PE extends ExtensionElement > PE packetExtensionfromCollection ( Collection < ExtensionElement > collection , String element , String namespace ) { return extensionElementFrom ( collection , element , namespace ) ; }
Get a extension element from a collection.
@param collection
@param element
@param namespace
@param <PE>
@return the extension element
@deprecated use {@link #extensionElementFrom(Collection, String, String)} instead.