#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
#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;
    }