code: public Path getAppEngineSdkForJavaPath() {
      Path resolved = getPath().resolve(APPENGINE_SDK_FOR_JAVA_PATH);
      if (resolved == null) {
        throw new RuntimeException("Misconfigured App Engine SDK for Java");
      }
      return resolved;
    }
docs: Returns the directory containing JAR files bundled with the Cloud SDK.
  
  @return the directory containing JAR files bundled with the Cloud SDK