@Override
    public boolean isAdvertisedWithNodeIdentity(@Nullable final byte[] serviceData) {
        return serviceData != null && serviceData.length == 17
                && serviceData[ADVERTISED_HASH_OFFSET - 1] == ADVERTISEMENT_TYPE_NODE_IDENTITY;
    }
Appends the PDUs that are segmented at gatt layer.

@param mtuSize mtu size supported by the device/node
@param pdu     pdu received by the provisioner
@return the combine pdu or returns null if not complete.
mesh/src/main/java/no/nordicsemi/android/mesh/MeshManagerApi.java