… free form query parameters (#10428)

* [Java][RestTemplate][WebClient] fix issue #8352 handling of free-form
query parameters with Java

* replace tab by spaces

* commit samples files generated by the generate-samples.sh script

…r minor updates/fixes (#10434)

* add handling of array of oneOfs

* handle res model-type lowercase name +shorten code

* remove unnecessary vendor-extension model enum

* handle openapi lowercase schema name for array res

* change xs:anytype to string for file responses

* update checkstyles

* remove not needed imports again

* update samples

* upper/lowercase use local getdefault

* update  samples again

* fix: expose allowed values of the enum

Fixes #10385

* chore: update examples

* fix!: accept should not force application JSON 

Generated code offen provides range of accept methods.
This method improperly takes JSON as preferred

Example:
	localVarHTTPHeaderAccepts := []string{"application/zip", "application/json"}

* chore: generated changes

)

* [scala] fix byteArray mapping in AbstractScala

* fix testng framework instead of junit for sttp codegen

* regenerate scala examples

* regenerate docs and examples

* fix test

…0337)" (#10440)

This reverts commit 18301d0.