in src/main/java/com/amazonaws/neptune/auth/NeptuneNettyHttpSigV4Signer.java [53:57]
public NeptuneNettyHttpSigV4Signer(
final String regionName, final AWSCredentialsProvider awsCredentialsProvider)
throws NeptuneSigV4SignerException {
super(regionName, awsCredentialsProvider);
}