Method insert

Fleece/Mutable/MutableArray.hh:60–60

        void resize(uint32_t newSize)               {heapArray()->resize(newSize);}
        void insert(uint32_t where, uint32_t n)     {heapArray()->insert(where, n);}
        void remove(uint32_t where, uint32_t n)     {heapArray()->remove(where, n);}

        /** Promotes an Array item to a MutableArray (in place) and returns it.