Spring Cloud Openfeign feignclient does not support non-required path variables

SpringCloud - 2.2.1

Issue Description - I'm extending controller from another service using @FeignClient -

@FeignClient(name = "<NAME>", url = "<URL>")
public interface IMyController extends IFromAnotherServiceController {
}

in the other controller I have the following api definition -

   @ApiOperation(value = "", nickname = "getSomething")
    @ApiResponse(code = 200, message = "")
    @GetMapping(path= {"/api/get-something/a/{a}",
                         "/api/get-something/a/{a}/b/{b}",
                         "/api/get-something/a/{a}/b/{b}/c/{c}"})
    SomeDto getSomething(@PathVariable(name = "a") String a,
                                                     @PathVariable(required = false, name = "b") String b
                                                     @PathVariable(required = false, name = "c") String c); 

So i have only 1 path variable which is required, other 2 are optional.

I use this method getSomething in my code with 3 parameters this way : client.getSomething(x, y, z); (while client is of type IMyController)

And when I try to start the application, I get the following error -

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '...IFromAnotherServiceController ': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Method getSomething can only contain at most 1 value field. Found: [/api/get-something/a/{a}, /api/get-something/a/{a}/b/{b}, /api/get-something/a/{a}/b/{b}/c/{c}]

Any idea what configuration am I missing? Why it enables me to call this method with 3 arguments but then at the start up it throws exception that i can use only 1?

Thanks!

Comment From: wolfsono

Any update?

Comment From: OlgaMaciaszek

Please learn how to properly format code and logs. Will look at the issue tomorrow.

Comment From: OlgaMaciaszek

@wolfsono This is not supported at this point. Marking it as an enhancement.