'Destroy a VM instance.
Steps followed for each VM are:
1. Power off, if it is in poweredOn state.
2. Un-register.
3. Delete the contents of the folder holding the VM related data.'

def destroy(self, instance, destroy_disks=True):

    LOG.debug('Destroying    instance', instance=instance)
    self._destroy_instance(instance, destroy_disks=destroy_disks)
    LOG.debug('Instance    destroyed', instance=instance)
