# gdtest_mixed_docs > A synthetic test package with mixed docstring styles ## Docs ### API Reference #### Classes > Main classes provided by the package - [Converter](reference/Converter.html): A data converter #### Functions > Utility functions - [decode](reference/decode.html): Decode bytes to a string - [encode](reference/encode.html): Encode a string to bytes - [validate](reference/validate.html): Validate the input data