-/**
- * This function returns a native storage from a java storage instance.
- *
- * @param jstorage The java storage object from which get the native storage.
- * @param env The environment of the current thread
- *
- * @return The function returns the native storage associated to the java storage object.
- *
- * @exception If the class Storage is not found the function throws the ClassNotFoundException. If the field bind
- * of this class is not found the function throws the exception NotSuchFieldException.
- */