in src/main/java/com/amazonaws/neptune/auth/NeptuneNettyHttpSigV4Signer.java [68:72]
public NeptuneNettyHttpSigV4Signer(final String regionName,
final AWSCredentialsProvider v1AwsCredentialProvider,
final String serviceName) throws NeptuneSigV4SignerException {
super(regionName, v1AwsCredentialProvider, serviceName);
}