Method newNode

Fleece/Tree/MutableNode.hh:334–336

        MutableInterior& operator=(const MutableInterior&) = delete;

        static MutableInterior* newNode(unsigned capacity, MutableInterior *orig =nullptr) {
            return new (capacity) MutableInterior(capacity, orig);
        }

        static void* operator new(size_t size, unsigned capacity) {
            return ::operator new(size + capacity*sizeof(NodeRef));