@After
  public void tearDown() throws Exception {
    for (ConfiguratorExtension configurationExtension : _configurationExtensions) {

      configurationExtension.destroy();
    }

    _bundleContext.ungetService(_serviceReference);
  }
  private void _startExtension(
      String namespace, NamedConfigurationContent... namedConfigurationContents) throws Exception {

    ConfiguratorExtension configuratorExtension =
        new ConfiguratorExtension(
            _configurationAdmin,
            new Logger(_bundleContext),
            namespace,
            Arrays.asList(namedConfigurationContents),
            Arrays.<ConfigurationDescriptionFactory>asList(
                new StringConfigurationDescriptionFactory()));

    configuratorExtension.start();

    _configurationExtensions.add(configuratorExtension);
  }
  @Test
  public void testExceptionInSupplierDoesNotStopExtension() throws Exception {
    ConfiguratorExtension configuratorExtension =
        new ConfiguratorExtension(
            _configurationAdmin,
            new Logger(_bundleContext),
            "aBundle",
            Arrays.<NamedConfigurationContent>asList(
                new StringSingleNamedConfigurationContent("test.pid", "key=value")),
            Arrays.asList(
                new ConfigurationDescriptionFactory() {

                  @Override
                  public ConfigurationDescription create(
                      NamedConfigurationContent namedConfigurationContent) {

                    return new SingleConfigurationDescription(
                        "exception",
                        new Supplier<Dictionary<String, Object>>() {

                          @Override
                          public Dictionary<String, Object> get() {
                            throw new RuntimeException("This should be handled");
                          }
                        });
                  }
                },
                new StringConfigurationDescriptionFactory()));

    configuratorExtension.start();

    _configurationExtensions.add(configuratorExtension);

    Configuration[] configurations = _configurationAdmin.listConfigurations(null);

    Assert.assertEquals(1, configurations.length);
  }