public static RemoteGraph open(final String configFile) throws Exception {
        final Configurations configs = new Configurations();
        return open(configs.properties((configFile)));
    }
Creates a new {@link RemoteGraph} instance using the specified configuration, which allows {@link RemoteGraph}
to be compliant with {@link GraphFactory}. Expects key for {@link RemoteConnection#GREMLIN_REMOTE_CONNECTION_CLASS}
as well as any configuration required by the underlying {@link RemoteConnection} which will be instantiated.
Note that the {@code Configuration} object is passed down without change to the creation of the
{@link RemoteConnection} instance.
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/structure/RemoteGraph.java