@Test
    public void shouldConfigureForGroovyOnly() {
        final GroovyCompilerGremlinPlugin plugin = GroovyCompilerGremlinPlugin.build().
                compilation(GroovyCompilerGremlinPlugin.Compilation.COMPILE_STATIC).create();
        final Optional<Customizer[]> customizers = plugin.getCustomizers("gremlin-not-real");
        assertThat(customizers.isPresent(), is(false));
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-groovy/src/test/java/org/apache/tinkerpop/gremlin/groovy/jsr223/GroovyCompilerGremlinPluginTest.java