@Nullable
    public Integer getProvisionerAddress() {
        return getSelectedProvisioner().getProvisionerAddress();
    }
Checks if the app key is in use.

<p>
This will check if the specified app key is added to a node other than the selected provisioner node
</p>

@param meshKey {@link MeshKey}
mesh/src/main/java/no/nordicsemi/android/mesh/BaseMeshNetwork.java