find_binding and get_bindingDetail API

Why do the two api find_binding and get_bindingDetail return the same
object while all the other pairs find_service - get_serviceDetail,
find_business - get_businessDetail and find_tmoldel - get_tmodelDetail
return different ones? I'm referring to the UDDIV2 specification.

It seems that find_binding and get_bindingDetail api don't respect the
drill-down pattern as explained in UDDI V2 specification.
Anyone can get all binding details just calling find_binding, without
knowing the key.

Many Thanks

Federica Ciotti