https://liftweb.net/api/30/api/net/liftweb/mapper/MappedUniqueId.html
MappedUniqueId - Lift Framework 3.0-RC3 - net.liftweb.mapper.MappedUniqueId
MappedUniqueId - Lift Framework 3.0 - RC3 - net.liftweb.mapper.MappedUniqueId
lift frameworkliftwebmapper