Since I just started to write Plutus code, I want to make some tests of Plutus. 

For example, I'd like to know what exactly my `redeemer :: BuiltinData` value is. However I can't convert BuiltinData to BuiltinString which means I can't use `trace :: BuiltinString -> a -> a` to log it. 

Is it possible to convert BuiltinData to BuiltinString or there is different approach to log redeemer?