code: public static List<ConfigMetadataNode> extractConfigs(ModulesMetadata modulesMetadata) {
  		final List<ModuleMetadata> modules = modulesMetadata
                  .getModules()
                  .stream()
                  .collect(Collectors.toList());
  		return modules.stream()
                  .map(ModuleMetadata::getConfigs)
                  .flatMap(Collection::stream)
                  .sorted(Comparator.comparing(MetadataNode::getName))
                  .collect(Collectors.toList());
  	}
docs: Extract the configuration metadata nodes from the given metadata.
  
  @param modulesMetadata the metadata of the bootique modules.
  @return the configuration metadata nodes.