How to import an ova image using VISDK

I understand that ova is an archive format of the ovf image. Basically it's a tarball of the files in the ovf image. Is there any API in VISDK to take an ova file directly from a remote server? An ova file can be really huge. Assuming the ova file is located on an FTP server. It'd become really inefficient if it requires download the huge ova file before import.

Thanks!