Example
<classname>text</classname>
Places this can be found
externalSiteSubsetter contains this directly
externalRequest contains this directly
externalVectorAvailableDataSubsetter contains this directly
printlineNetworkProcess contains this directly
externalWaveformVectorProcess contains this directly
externalVectorRequest contains this directly
externalChannelSubsetter contains this directly
externalNetworkSubsetter contains this directly
externalEventChannelSubsetter contains this directly
externalAvailableDataSubsetter contains this directly
externalStationSubsetter contains this directly
externalEventVectorSubsetter contains this directly
externalOriginSubsetter contains this directly
externalEventStationSubsetter contains this directly