如何在Gatling中使用feeder生成具有随机值的多值映射并注入请求体

param1,param2,param3
value1_1,value1_2,value1_3
value2_1,value2_2,value2_3
value3_1,value3_2,value3_3

import io.gatling.core.Predef._
import io.gatling.http.Predef._

val feeder = csv("data.csv").random

val scn = scenario("My Scenario")
  .feed(feeder)
  .exec(http("My Request")
    .post("/my-endpoint")
    .formParam("param1", "${param1}")
    .formParam("param2", "${param2}")
    .formParam("param3", "${param3}")
  )

setUp(scn.inject(atOnceUsers(10))).protocols(httpProtocol)