private void importPublicKeysFromConfig() {
    LOG.info("Importing public keys from configuration.");
    JsonUtil.getArrayNode(nodesConfig, "keys")
        .ifPresent(keys -> keys.forEach(this::importPublicKey));
  }
Imports public keys from input configuration.
app/src/main/java/org/hyperledger/besu/cli/subcommands/operator/GenerateBlockchainConfig.java