code: public static ImageArchiveManifestEntry findEntryByRepoTag(String repoTag, ImageArchiveManifest manifest) {
          if(repoTag == null || manifest == null) {
              return null;
          }
  
          for(ImageArchiveManifestEntry entry : manifest.getEntries()) {
              for(String entryRepoTag : entry.getRepoTags()) {
                  if(repoTag.equals(entryRepoTag)) {
                      return entry;
                  }
              }
          }
  
          return null;
      }
docs: Search the manifest for an entry that has the repository and tag provided.
  
  @param repoTag the repository and tag to search (e.g. busybox:latest).
  @param manifest the manifest to be searched
  @return the entry found, or null if no match.