[PHP] Generating empty switch statements

Description

I'm using springfox-swagger-2.9.2 to generate my automated swagger documentation for my spring mvc project. When defining an OPTIONS http method I always return status code 204 on success, no 200 involved. The swagger codegen now shows empty switch statement blocks in the ControllerApi files when catching exceptions:

catch (ApiException $e) {
   switch ($e->getCode()) {
   }
   throw $e;
}

This leads to warnings on my side.

Swagger-codegen version

swagger-codegen-cli-2.4.7.jar

Swagger declaration file content or url

Snipped part:

{
	"operationId": "showOptionsCollectionUsingOPTIONS_9",
	"consumes": ["application/json"],
	"produces": ["*/*"],
	"responses": {
		"204": {
			"description": "No Content"
		},
		"401": {
			"description": "Unauthorized"
		},
		"403": {
			"description": "Forbidden"
		}
	}
}

(Side question: How can I get rid of the consumes? It does not consume anything.)

Command line used for generation

java -jar ../swagger-codegen-cli-2.4.7.jar generate -l php -i {url} -a "Authorization:Basic {base64}"

Steps to reproduce

Create a controller method like this:

@RequestMapping(value = "", method = RequestMethod.OPTIONS)
@ResponseStatus(code = HttpStatus.NO_CONTENT)
public void showOptionsCollection(HttpServletResponse response) {
	response.setHeader("Allow", "GET, OPTIONS");
}

Suggest a fix/enhancement

Do not include the statements if empty.

Reproduce the issue with swagger-codegen-cli-2.4.7.jar using the documented generate command and inspect the generated PHP ControllerApi files. Trace the generator template or entry point that emits the ApiException switch; done means an OPTIONS operation with only a 204 response no longer produces an empty switch block.