forked from phoedos/pmd

* Remove ScalaNode#childrenAccept: this only makes stack traces longer. Besides, the node doesn't know how to accumulate values, so it's useless. * Specialize return type of some methods of the interface.
* Remove ScalaNode#childrenAccept: this only makes stack traces longer. Besides, the node doesn't know how to accumulate values, so it's useless. * Specialize return type of some methods of the interface.