func (p *parser) buildId(id *bucket.Id, t *tuple) {
id.Resolution = p.Resolution()
id.Time = p.Time()
id.Auth = p.Auth()
id.ReadyAt = id.Time.Add(id.Resolution).Truncate(id.Resolution)
id.Name = p.Prefix(t.Name())
id.Units = t.Units()
id.Source = p.SourcePrefix(p.ld.Source())
return
}