@Override
    public String getMethodCallSyntax(final String obj, final String m, final String... args) {
        return null;
    }
This is a "do nothing" implementation of the {@link GremlinScriptEngineFactory} which can be used to help test plugin
implementations which don't have reference to a {@link GremlinScriptEngine} as a dependency.

@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/jsr223/MockGremlinScriptEngineFactory.java