perfsonar development work

[maxim <>]

 Hello,
I am trying to get a conclusive answer from each service's developer on
namespace declaration. Is it true that every ps service supports
namespace declarations either in the head element ( message ) or
in the top of the element where it used  ( so it wont choke on missing
declaration in the message element ).For example pinger namespace 
can be declared here :

 <nmwg:message  
    xmlns:pinger="http://ggf.org/ns/nmwg/tools/pinger/2.0/"; ...
    xmlns:nmwg="http://ggf.org/ns/nmwg/base/2.0/"; type="SetupDataResponse" 
id="message.10186492">

and used below

 <nmwg:data metadataIdRef="meta2" id="data1">
      <nmwg:commonTime value="1198279649" type="unix">
       <pinger:datum value="53.258" name="minRtt"/>

or like that ( in every data element ):

   <nmwg:message   
    xmlns:nmwg="http://ggf.org/ns/nmwg/base/2.0/"; type="SetupDataResponse" 
id="message.10186492">

 <nmwg:data metadataIdRef="meta2" id="data1" 
xmlns:pinger="http://ggf.org/ns/nmwg/tools/pinger/2.0/";>
      <nmwg:commonTime value="1198279649" type="unix">
       <pinger:datum value="53.258" name="minRtt"/>
 --
The both should be supported, right ?
Thanks,
        Maxim.