1. A method comprising: determining a data format of a received message, the data format being a first data format, activating, among a plurality of data format parsers for a plurality of respective data formats, a data format parser corresponding to the determined data format of the received message; using the activated data format parser, operating on the received message to make the received message resemble a second data format different from the first data format; and using an unmarshaller specific to the second data format and implemented by a hardware processor, unmarshalling the message resembling the second data format.