* Fix multi-part binary array strings
Multi-part binary array strings as outlined in #3139 resulted in `MultipartFile` rather than `List<MultipartFile>`. This PR attempts to resolve this by adjusting the templates.
Two tests have been added: one for `spring-boot` and one for `spring-cloud`.
Resolve#3139
* Fix multipart file name and description
* Handle array of MultipartFile for delegate
* Update samples due to file description being picked up
* Upload result of bin/spring-stubs
* Moved example string to a dedicated variable in Spring's methodBody template
* Created a new exampleString template for JavaSpring
* Added a new mustache lambda to trim whitespace in fragments
* Added a new lambda to split long fragments into compilable strings
* Use newly introduced lambdas in Spring's API template to avoid generating uncompilable example code
* fixed bug where nullApi.java would be generated. Instead, generated DefaultApi.java to match the default path /{pathParam}
* fix to bug #3157
* update samples
* add test cases to cover different collection format
* add space params to retrofit 1.x
* add space params to retrofit 2.x
* rename url to localVarUrl
* fix exception in haskell servant
* kotlin spring : add reactivity via kotlin's coroutines
* add kotlin spring boot reactive samples
* bug : fix spring version and import for coroutines
* remove exception handler for reactive (webflux doesn't support it)
* add spring milestone repository to maven pom
* add reactive type for list in Api and ApiImpl methodes for mathching body responsive parameter
* fix baseType for ArraySchema
* regenerate samples
* updating documentation
* [Elixir] update version / add test
* update samples (add missing 200 responses in petstore-with-fake-endpoints-models-for-testing.yaml)
* [Elixir] update to 1.6 version
* [Elixir] fix test petapi
* add static modifier - mvn verify passes
* specify charset, mvn verify works, compiles and clean on spotbugs in my project
* update samples as per contribution guide; mvn integration-test passes
* commit rest of samples
* fix missing newline at EOF
* lots of new newlines
* needed to run mvn clean beforehand...
* Adds v2 spec additionalproperties examples, adds v3 spec nulllable model example, updates samples
* Remaining samples updates
* Adds csharp generator update to handle models with multilevel parent types, which works for the AdditionalPropertiesObject model, samples updated
