output: #fixed code
                                  protected boolean isInstallingExtensionNeeded(Set<BindingEnum> bindingTypes) {
          final JsonObject hostJson = readHostJson();
          final JsonObject extensionBundle = hostJson == null ? null : hostJson.getAsJsonObject(EXTENSION_BUNDLE);
          if (extensionBundle != null && extensionBundle.has("id") &&
                  StringUtils.equalsIgnoreCase(extensionBundle.get("id").getAsString(), EXTENSION_BUNDLE_ID)) {
              getLog().info(SKIP_INSTALL_EXTENSIONS_BUNDLE);
              return false;
          }
          final boolean isNonHttpTriggersExist = bindingTypes.stream().anyMatch(binding ->
                  !Arrays.asList(FUNCTION_WITHOUT_FUNCTION_EXTENSION).contains(binding));
          if (!isNonHttpTriggersExist) {
              getLog().info(SKIP_INSTALL_EXTENSIONS_HTTP);
              return false;
          }
          return true;
      }
input: #vulnerable code 
                                  protected boolean isInstallingExtensionNeeded(Set<BindingEnum> bindingTypes) {
          final JsonObject hostJson = readHostJson();
          final JsonObject extensionBundle = hostJson.getAsJsonObject(EXTENSION_BUNDLE);
          if (extensionBundle != null && extensionBundle.has("id") &&
                  StringUtils.equalsIgnoreCase(extensionBundle.get("id").getAsString(), EXTENSION_BUNDLE_ID)) {
              getLog().info(SKIP_INSTALL_EXTENSIONS_BUNDLE);
              return false;
          }
          final boolean isNonHttpTriggersExist = bindingTypes.stream().anyMatch(binding ->
                  !Arrays.asList(FUNCTION_WITHOUT_FUNCTION_EXTENSION).contains(binding));
          if (!isNonHttpTriggersExist) {
              getLog().info(SKIP_INSTALL_EXTENSIONS_HTTP);
              return false;
          }
          return true;
      } 
                              #location 3 
                              #vulnerability type NULL_DEREFERENCE