Scala で object と trait を同じ名前にする

gistfile1.scala

Welcome to Scala version 2.9.0.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_20).
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scala> object A{
     |   trait B{
     |     override def toString = "trait"
     |   }
     |
     |   object B{
     |     override def toString = "object"
     |   }
     |
     | }
defined module A

scala> A.B
res0: A.B.type = object

scala> new A.B{}
res1: java.lang.Object with A.B = trait