Class Keydata - similar entries from multiple sections?

[Wolfgang Alper]

Hello,
i am using commoncpp2-1.5.6.

How can i retrieve keys with the same name from a given section using the 
Class Keydata?

Example:
[general]
port = 1234
host = www.myhost.com
[proxy]
port = 4321
host = www.proxy.com

running 
load("/mydir/myfile/general");
and 
load("/mydir/myfile/proxy]");

This leads to multiple port and host entries. 

Of cause i can use getCount("port") and then iterate through the values, but 
this assumes to know wether a section has a key "port".
Also i could use clrValue("port") to clear the value before loading a new 
section, but this seems to be a bad workaround.

So how can i  query like "general/host" to get the value of host in the 
[general] section or "proxy/host" to get the host in the [proxy] section?

Thanks 

Wolfgang