in src/main/java/com/amazonaws/neptune/client/rdf4j/NeptuneSparqlRepository.java [94:108]
public NeptuneSparqlRepository(
final String endpointUrl, final AwsCredentialsProvider awsCredentialsProvider,
final String regionName)
throws NeptuneSigV4SignerException {
super(getSparqlEndpoint(endpointUrl));
this.authenticationEnabled = true;
this.endpointUrl = endpointUrl;
this.awsCredentialsProvider = awsCredentialsProvider;
this.regionName = regionName;
initAuthenticatingHttpClient();
}