jsonOptions :: Int              -- ^ Length of the field prefix
            -> Options
jsonOptions pl = defaultOptions { fieldLabelModifier = jsonFieldLabelModifier pl,
                                  allNullaryToStringTag = True,
                                  omitNothingFields = True
                                }
jsonOptions :: Int              -- ^ Length of the field prefix
            -> Options
jsonOptions pl = defaultOptions { fieldLabelModifier = jsonFieldLabelModifier pl,
                                  allNullaryToStringTag = True,
                                  omitNothingFields = True
                                }
jsonOptions pl = defaultOptions { fieldLabelModifier = jsonFieldLabelModifier pl,
                                  allNullaryToStringTag = True,
                                  omitNothingFields = True
                                }