/// Returns the UUID of the subvolume this subvolume is a snapshot of, or
/// [`None`] if this subvolume is not a snapshot.
Returns the UUID of the subvolume this subvolume is a snapshot of, or
[`None`] if this subvolume is not a snapshot.
Returns the UUID of the subvolume this subvolume is a snapshot of or [ ` None ` ] if this subvolume is not a snapshot .
pub fn parent_uuid(&self) -> Option<Uuid> {
        let ret = Uuid::from_bytes(self.0.parent_uuid);
        if ret.is_nil() {
            None
        } else {
            Some(ret)
        }
    }
pub fn parent_uuid ( & self ) -> Option < Uuid > { let ret = Uuid :: from_bytes ( self . 0 . parent_uuid ) ; if ret . is_nil ( ) { None } else { Some ( ret ) } }
Returns the UUID of the subvolume this subvolume is a snapshot of, or
[`None`] if this subvolume is not a snapshot.
Returns the UUID of the subvolume this subvolume is a snapshot of or [ ` None ` ] if this subvolume is not a snapshot .
&self