Use of wildcard "*" is allowed on all field except of timespan Station, channel and locId are optional. If station or channel are not specified the respective elements are not added to the XML tree If locId is missing or blank, only streams with empty location ID are included Compression format can be bzip2 or none (not implemented yet) Instruments (default false) indicates whether instrument data should be added to XML ModifiedAfter(ISO dateTime) if set, only entries after given time will be returned This type models the error in a way to be uniform for both soap and rest invocations This is a general type describing all kind of available instrumentation, our instances are obtained extending this with inventory.xsd features. i.e.: it could implement station, network etc...