code: public static void initJNI()
    {
      if (_isInitJNI.getAndSet(true)) {
        return;
      }
  
      // order matters because of static init and license checking
      FilesystemPath jniFilePath = JniFilePath.create();
  
      if (jniFilePath != null) {
        DEFAULT_SCHEME_MAP.put("file", jniFilePath);
  
        SchemeMap localMap = _localSchemeMap.get();
        if (localMap != null)
          localMap.put("file", jniFilePath);
  
        localMap = _localSchemeMap.get(ClassLoader.getSystemClassLoader());
        if (localMap != null)
          localMap.put("file", jniFilePath);
  
        VfsOld.PWD = jniFilePath;
        VfsOld.setPwd(jniFilePath);
      }
    }
docs: Initialize the JNI.