Type in expressions to have them evaluated.
Type :help for more information.

scala> 

scala> import scala.reflect.runtime.universe._
import scala.reflect.runtime.universe._

scala> class A { def foo(x: Int*) = 1 }
defined class A

scala> val sig = typeOf[A] member newTermName("foo") typeSignature
warning: there were 1 feature warnings; re-run with -feature for details
sig: reflect.runtime.universe.Type = (x: <?>)scala.Int

scala> val x = sig.asInstanceOf[MethodType].params.head
x: reflect.runtime.universe.Symbol = value x

scala> println(x.typeSignature)
scala.Int*

scala>