private boolean isApplicationKeyBound(@NonNull final List<NetworkKey> networkKeys, @NonNull final ApplicationKey applicationKey) {
        for (NetworkKey networkKey : networkKeys) {
            if (networkKey.keyIndex == applicationKey.keyIndex) return true;
        }
        return false;
    }
Checks if the given Application Key is bound to the network keys in the list

@param networkKeys    List of Network keys.
@param applicationKey Application key.
@return true if bound and false otherwise
mesh/src/main/java/no/nordicsemi/android/mesh/ImportExportUtils.java