public static DriverRemoteConnection using(final String clusterConfFile, final String remoteTraversalSourceName) {
        try {
            return new DriverRemoteConnection(Cluster.open(clusterConfFile), true, remoteTraversalSourceName);
        } catch (Exception ex) {
            throw new IllegalStateException(ex);
        }
    }
Creates a {@link DriverRemoteConnection} using a new {@link Cluster} instance created from the supplied
configuration file. When {@link #close()} is called, this new {@link Cluster} is also closed.
gremlin-driver/src/main/java/org/apache/tinkerpop/gremlin/driver/remote/DriverRemoteConnection.java