On the command line, add this to your Gradle invocation:

[source,properties]
----
-Djavax.xml.accessExternalDTD=http
----

To make this workaround persistent, add the following line to your `gradle.properties`:

[source,properties]
----
systemProp.javax.xml.accessExternalDTD=http
----

			obj, ok := schema.Items.Schema.Properties[k]
			if !ok {
				// we validate that all XListMapKeys are existing properties in ValidateCustomResourceDefinitionOpenAPISchema, so skipping here is ok
				continue
			}

			if isRequired[k] == false && obj.Default == nil {

        public PropertyMetadata getProperty(String name) {
            return properties.get(name);
        }

        public PropertyMetadata property(String name) {
            PropertyMetadata property = properties.get(name);
            if (property == null) {
                property = new PropertyMetadata(name);
                properties.put(name, property);
            }
            return property;
        }

The problem is that paths often change, and the more places you need to change them, the more likely you will miss one and break the build.

Where possible, you should use tasks, task properties, and <<properties_providers.adoc#understanding_properties,project properties>> — in that order of preference — to configure file paths.

        result.setActiveExternalProfiles(activeExternalProfiles);

        if (!activeExternalProfiles.isEmpty()) {
            Properties profileProps = new Properties();
            for (Profile profile : activeExternalProfiles) {
                profileProps.putAll(profile.getProperties());
            }

        result.setActiveExternalProfiles(activeExternalProfiles);

        if (!activeExternalProfiles.isEmpty()) {
            Properties profileProps = new Properties();
            for (Profile profile : activeExternalProfiles) {
                profileProps.putAll(profile.getProperties());
            }

            }
        }

        return version;
    }

    private static Map<String, String> toMap(Properties properties) {
        if (properties != null && !properties.isEmpty()) {
            return properties.entrySet().stream()
                    .collect(Collectors.toMap(e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue())));

        } else {

                "ValidationError": {
                    "title": "ValidationError",
                    "required": ["loc", "msg", "type"],
                    "type": "object",
                    "properties": {
                        "loc": {
                            "title": "Location",
                            "type": "array",
                            "items": {

 * can be changed (See <a href="../../../resolver.html">Setting Name
 * Resolution Properties</a>). The servername and path components are
 * not case sensitive but the domain, username, and password components
 * are. It is also likely that properties must be specified for jcifs
 * to function (See <a href="../../overview-summary.html#scp">Setting
 * JCIFS Properties</a>). Here are some examples of SMB URLs with brief
 * descriptions of what they do:

            os.path.exists(os.path.join(path, 'source.properties')))

  android_ndk_home_path = prompt_loop_or_load_from_env(
      environ_cp,
      var_name='ANDROID_NDK_HOME',
      var_default=default_ndk_path,
      ask_for_var='Please specify the home path of the Android NDK to use.',
      check_success=valid_ndk_path,
      error_msg=('The path %s or its child file "source.properties" '
                 'does not exist.'))