How to get the full class name of a dynamically created class in Scala

I have a situation where I have to get the fully qualified name of a class I generate dynamically in Scala. Here's what I have so far.

import scala.reflect.runtime.universe
import scala.tools.reflect.ToolBox

val tb = universe.runtimeMirror(getClass.getClassLoader).mkToolBox()

val generatedClass = "class Foo { def addOne(i: Int) = i + 1 }"
tb.compile(tb.parse(generatedClass))

val fooClass:String = ???

Clearly this is just a toy example, but I just don't know how to get the fully qualified name of Foo. I tried sticking a package declaration into the code but that threw an error when calling tb.compile.

Does anyone know how to get the fully qualified class name or (even better) to specify the package that Foo gets compiled under?

Thanks