Implicit uuid columns

 DBIx::Class provides a behaviour similar to Class::DBI::UUID. It
 impments globally unique columns values. When an object is created, the
 columns specified are given unique IDs.
 .
 When loaded, UUIDColumns will search for a suitable uuid generation module
 from the following list of supported modules:
 .
  * Data::UUID
  * APR::UUID*
  * UUID
 .
 If no supporting module can be found, an exception will be thrown.