Workaround for Swagger Annotations with Union Types in HttpApi Module

const customRoute = HttpApiEndpoint.get(
  "route",
  "/route",
)
  .addSuccess(Schema.Void, { status: 302 })
  .setUrlParams(
    Schema.Union( 
         Schema.Struct(
          {
            success: Schema.String,
            success_description: Schema.optional(Schema.String),
          }
        ),
         Schema.Struct({
            error: Schema.String,
            error_cause: Schema.String,
            error_additional_message: Schema.String
        }),
    )
  )