Enrich tuples with data from external web services.
Parameter:
- serviceMethod: REST/SOAP
- method: REST/SOAP
- url:static part of the url
- urlSuffix: url part after argument
- arguments: Options ...
- operation: operation used to call a SOAP-Webservice
- datafields: the datafields received through the webservice
- charset: the charset, e.g. UTF-8
- parsingMethod: XML or JSON
- keyValueOutput: boolean
- wsdlLocation: url to the location of the wsdl file