forked from loafle/openapi-generator-original
* [dart][dart-dio] Remove manual json encode/decode calls in API classes Dio automatically adds a default transformer which does call `json.encode` and `json.decode` when the content-type is `application/json`. When the content-type is different, then it is up to the consumer to configure the Dio instance correctly to support custom content-types. Also tests!!! * [dart] Constraint test library to < 1.16.0 as it requires Dart 2.12.0 * Fix more constraint problems for the new test project