No builtin marshaller support for converting kotlin.ByteArray to application/octetstream

[izaxs]

It seems like Misk has no builtin marshaller for kotlin.ByteArray to applicationcon/octetstream by default.

My web action tries to return a PDF file, I set the web action annotation to @ResponseContentType(MediaTypes.APPLICATION_OCTETSTREAM) and return type as Response

Got this error:

    1) [Guice/ErrorInjectingConstructor]: IllegalArgumentException: no marshaller for application/octetstream as Response<kotlin.ByteArray>
      at WebActionsServlet.<init>(WebActionsServlet.kt:42)
      at WebActionsServlet.class(WebActionsServlet.kt:37)
      at JettyService.<init>(JettyService.kt:58)
          \_ for 2nd parameter
      at JettyService.class(JettyService.kt:49)
      while locating JettyServic

Both ByteArray and APPLICATION_OCTETSTREAM are often used in web, so is there any configuration I missed that can be turned on?
If not could you provide some links about how to inject the marshaller in Misk?

Update:
It would be nice to support ByteArray here:

misk/misk/src/main/kotlin/misk/web/marshal/Generic.kt

Line 96 in 39e01cb

return when (actualResponseType(returnType)) {