public static GremlinScriptEngine get(final String scriptEngineName) {
        return cached.getEngineByName(scriptEngineName);
    }
Delegates calls to the {@link CachedGremlinScriptEngineManager} instance ensuring that the same instance
is returned for each {@code ScriptEngine} requested.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/jsr223/SingleGremlinScriptEngineManager.java