WSDL = Web Services Description Language an XML format for describing network services as a set of endpoints containing either document-oriented or procedure-oriented information. It provides a simple way for service providers to describe the basic format of requests to their systems regardless of the underlying protocol (such as Simple Object Access Protocol or XML) or encoding (such as Multipurpose Internet Messaging Extensions).
	This defines what the user/caller is to provide, note at the moment every method has the same input format.
	Current implementation, user only provides a target which contains the source & destination. This is a natural evolution of host characteristics where there is only a source.
	Currently the definition does not include a time window specification.  In such a case can provide the average as a value but may need top provide an array with all the individual results.
	/afs/slac/g/www/cgi-wrap-bin/net/offsite_mon/web_services
	Adding time:
	<part name=“time” type=“xsd:string”/>
	time=startTime[:endTime]  #optional, if leave out then get latest measurement