Http RequestBuilder is not correctly configured

build.sbt

name := "request-builder"

scalaVersion := "2.11.6"

libraryDependencies ++= Seq(
  "com.twitter" %% "finagle-core" % "6.25.0",
  "com.twitter" %% "finagle-http" % "6.25.0"
)

Test.scala

object Test extends App {
  val url = "http://google.com/search"
  val query = ("q", "finagle")
  val request = com.twitter.finagle.http.RequestBuilder()
    .url(url)
    .addFormElement(query)
    .buildGet()

  println(request)
}