public boolean isModelExists(final int modelId) {
        final ProvisionedMeshNode node = getSelectedMeshNode().getValue();
        return node != null && node.isExist(modelId);
    }
Returns an observable live data object containing the transaction status.

@return {@link TransactionStatus}
app/src/main/java/no/nordicsemi/android/nrfmesh/viewmodels/BaseViewModel.java