///\return Get the the variable part of the source data field as a ByteStream that contains the data and decompress (if compressed) them without changing the packet (the variable part of the "source data field")
///Get the the variable part of the source data field as a ByteStream that contains the data and decompress (if compressed) them without changing the packet (the variable part of the "source data field")
virtualByteStreamPtrgetData();
///Get the compression algorithm used for this packet