// Update the prefix on a membership entry.
func (p *ModeParser) updatePrefix(m *core.Membership) {
var prefix string
for it := p.prefixes; it != nil; it = it.next {
if m.Data(it.metadata) != "" {
prefix += string(it.prefix)
}
}
m.SetData("", nil, strconv.Uitoa64(p.id)+" prefixes", prefix)
}
