chInstrumentDef (OtherInstrument x) = Data.Maybe.fromMaybe (error "Bad instr") $ Data.getInstrumentDefById x



fetchInstrumentDef (OtherInstrument x) = Data.Maybe.fromMaybe (error "Bad instr") $ Data.getInstrumentDefById x
fetchInstrumentDef (OtherInstrument x) = Data.Maybe.fromMaybe (error "Bad instr") $ Data.getInstrumentDefById x