// ParsePrefix method
g.P("func Parse", structName, "(ip string) (prefix ", structName, ", err error) {")
g.P(" hasPrefix := ", stringsPkg.Ident("Contains"), "(ip, \"/\")")
// ParsePrefix method
g.P("func Parse", structName, "(ip string) (prefix ", structName, ", err error) {")
g.P(" hasPrefix := ", stringsPkg.Ident("Contains"), "(ip, \"/\")")