public Map<String, String> getSslConfig() {
    return conf( sslKeys, sslValues ).asMap();
  }
@Test
  public void testGetSslConfig() {
    meta.setDefault();

    meta.setTopics( Collections.singletonList( "mytopic" ) );
    Map<String, String> config = meta.getSslConfig();
    assertTrue( config.size() > 0 );
    assertThat( meta.sslKeys.size(), equalTo( config.size() ) );
    assertTrue( config.keySet().containsAll( meta.sslKeys ) );
    for ( int i = 0; i < meta.sslKeys.size(); i++ ) {
      assertThat( config.get( meta.sslKeys.get( i ) ), equalTo( meta.sslValues.get( i ) ) );
    }
    MQTTConsumerMeta roundTrip = fromXml( meta.getXML() );

    assertTrue( meta.equals( roundTrip ) );
  }