public static List<String> removeDropWizardLines(final String value) {
        return value.lines()
                .sequential()
                .dropWhile(line -> !line.startsWith(APP_CONFIG + ":"))
                .takeWhile(line -> line.startsWith(APP_CONFIG + ":") || line.startsWith("  "))
                .collect(Collectors.toList());
    }
Builds a fresh config object tree with all the hard coded default values
and generates the yaml serialised form of it, saving the result to the
EXPECTED_YAML_FILE_NAME file so that it can be used in
{@link TestStroomYamlUtil#testGeneratedYamlAgainstExpected()}
<p>
NOTE: This main method is called from the stroom-app gradle build so if it
is moved you will need to refactor that too.
stroom-config/stroom-config-app/src/test/java/stroom/config/app/GenerateExpectedYaml.java