@Override
      public boolean visitExitPoint(Instruction instruction, @Nullable GrExpression returnValue) {
        final PsiElement returnElement = instruction.getElement();
        if (returnElement != null && isCorrectReturn(returnElement)) {
          final TextRange range = returnElement.getTextRange();
          myReadUsages.add(range);
        }
        return true;
      }
@Override
      public boolean visitExitPoint(Instruction instruction, @Nullable GrExpression returnValue)