[Libvirt-cim] regarding configuration to be used to create a VM

Hi All, We are interested to create/delete/update a VM using libvirt-CIM. Could you please help us to understand what is the standard/common format to be used as input for the libvirt-cim to create a VIM? Can we use OVF to create a VM? If so, are there any libraries which can convert OVF file to libvirt understandable xml format and vice versa? Thanks in advance for your help. Best Regards Raghu