in src/main/java/com/amazonaws/neptune/auth/NeptuneApacheHttpSigV4Signer.java [64:69]
public NeptuneApacheHttpSigV4Signer(
final String regionName, final AWSCredentialsProvider awsCredentialsProvider)
throws NeptuneSigV4SignerException {
super(regionName, awsCredentialsProvider);
}