add support for serialization lib in dio

Author: nicholasphair

openapi-generator-annotations/lib/src/openapi_generator_annotations_base.dart

@@ -216,13 +216,15 @@ class JaguarProperties extends AdditionalProperties {
 class DioProperties extends AdditionalProperties {
   /// Choose serialization format JSON or PROTO is supported
   final DioDateLibrary? dateLibrary;
+  final DioSerializationLibrary? serializationLibrary;
 
   /// Is the null fields should be in the JSON payload
   final bool? nullableFields;
 
   const DioProperties(
       {this.dateLibrary,
       this.nullableFields,
+      this.serializationLibrary,
       bool allowUnicodeIdentifiers = false,
       bool ensureUniqueParams = true,
       bool prependFormOrBodyParameters = false,
@@ -318,6 +320,8 @@ enum DioDateLibrary {
   timemachine
 }
 
+enum DioSerializationLibrary { built_value, json_serializable }
+
 enum SerializationFormat { JSON, PROTO }
 
 /// The name of the generator to use

openapi-generator-annotations/pubspec.yaml

@@ -1,6 +1,6 @@
 name: openapi_generator_annotations
 description: Annotation package for openapi_generator https://pub.dev/packages/openapi_generator.
-version: 4.0.0
+version: 4.1.0
 homepage: https://github.com/gibahjoe/openapi-generator-dart