public ApplicationPackage build() {
            return new MockApplicationPackage(root, hosts, services, schemas, files, schemaDir,
                                              deploymentSpec, validationOverrides, failOnValidateXml,
                                              queryProfile, queryProfileType, tenantName);
        }
Additional (mock) files that will exist in this application package, with their content.
config-model/src/main/java/com/yahoo/config/model/test/MockApplicationPackage.java