this.transform = transform;
    }

    /**
     * Get remote memory key
     *
     * @return remote memory key (token)
     */
    public int getRemoteKey() {
        return transform.getToken();
    }

    /**
     * Get remote memory address
     *
     * @return remote memory address (offset)
     */
    public long getAddress() {

        if (!valid) throw new IllegalStateException("Memory region invalidated");
        return buffer;
    }
    
    public int getLocalKey() { return localKey; }
    public int getRemoteKey() { return remoteKey; }
    public long getAddress() { return address; }
    public int getSize() { return buffer.remaining(); }
    
    public boolean hasAccess(RdmaAccess access) {

     */
    public int getLocalKey() {
        return localKey;
    }

    /**
     * Get remote memory key
     *
     * @return remote key for RDMA operations
     */
    public int getRemoteKey() {
        return remoteKey;
    }

    /**
     * Get memory address
     *
     * @return memory address
     */
    public long getAddress() {
        return address;
    }

    /**