/**
  * Visits a function node.
  *
  * @param PHP_Depend_Code_Function $function The current function node.
  *
  * @return void
  * @see PHP_Depend_VisitorI::visitFunction()
  */
 public function visitFunction(PHP_Depend_Code_Function $function)
 {
     $this->visits[] = $function->getName();
     parent::visitFunction($function);
 }