code: public static ExtensionId toExtensionId(String groupId, String artifactId, String classifier, Version version)
      {
          String extensionId = toExtensionId(groupId, artifactId, classifier);
  
          return new ExtensionId(extensionId, version);
      }
docs: Create a extension identifier from Maven artifact identifier elements.
  
  @param groupId the group id
  @param artifactId the artifact id
  @param classifier the classifier
  @param version the version
  @return the extension identifier
  @since 10.9
  @since 10.8.1