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The "DataSpec2" page has been changed by rezan: https://wiki.apache.org/devicemap/DataSpec2?action=diff&rev1=33&rev2=34 Transformers accept a string, apply an action, and then return a string. If multiple transformers are defined in a set, the outputs and inputs are - chained together. + linked together. Transformers are used in the input parsing phase and the attribute retrieval phase. Transformers can cause errors. Errors in input parsing are fatal, input parsing
