trait Foo {
 val name : String
 trait Bar {
   def doSomething : String
   override def toString = "Foo(" + name + ").Bar -> " + doSomething
 }
 object Bar {
   implicit def fromFunction(func : Function0[String]) = new Bar {
     def doSomething = func()
   }
 }
 def andThen(b : Bar) = b
}

object Foo {
  def foo(n : String) = new Foo {
    override val name = n
  }
}

Welcome to Scala version 2.8.1.final (OpenJDK 64-Bit Server VM, Java 1.6.0_20).
Type in expressions to have them evaluated.
Type :help for more information.

scala> Foo.foo("foo") andThen (() => "Bar")
java.lang.AssertionError: assertion failed
	at scala.Predef$$.assert(Predef.scala:77)
	at scala.tools.nsc.ast.TreeGen.mkAttributedQualifier(TreeGen.scala:82)
	at scala.tools.nsc.ast.TreeGen.mkAttributedQualifier(TreeGen.scala:45)
	at scala.tools.nsc.ast.TreeGen.mkAttributedRef(TreeGen.scala:107)
	at scala.tools.nsc.ast.TreeGen.mkAttributedStableRef(TreeGen.scala:149)
	at scala.tools.nsc.ast.TreeGen.mkAttributedQualifier(TreeGen.scala:60)
	at scala.tools.nsc.ast.TreeGen.mkAttributedQualifier(TreeGen.scala:45)
	at scala.tools.nsc.typechecker.Implicits$$ImplicitSearch.typedImplicit0(Implicits.scala:441)
	at scala.tools.nsc.typechecker.Implicits$$ImplicitSearch.typedImplicit(Implicits.scala:359)