@Test
    public void shouldCreateNewPlainTextSaslNegotiator() {
        final Authenticator.SaslNegotiator negotiator1 = authenticator.newSaslNegotiator(null);
        final Authenticator.SaslNegotiator negotiator2 = authenticator.newSaslNegotiator(null);

        assertNotEquals(negotiator1, negotiator2);
        assertNotEquals(negotiator2, negotiator1);
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-server/src/test/java/org/apache/tinkerpop/gremlin/server/auth/SimpleAuthenticatorTest.java