docs: public void init() {
          if (manifests == null) {
              manifests = new ArrayList<>();
              
              try {
                  primaryManifest = addToList(applicationContext.getResource(MANIFEST_PATH));
                  Resource[] resources = applicationContext.getResources("classpath*:/" + MANIFEST_PATH);
  
                  for (Resource resource : resources) {
                      Manifest manifest = addToList(resource);
                      
                      if (primaryManifest == null) {
                          primaryManifest = manifest;
                      }
                  }
  
              } catch (Exception e) {
                  log.error("Error enumerating manifests.", e);
              }
  
          }
      }