private void highlightLoopDeclaration(PsiLoopStatement statement) {

    if (statement instanceof PsiDoWhileStatement) {
      PsiKeyword whileKeyword = ((PsiDoWhileStatement)statement).getWhileKeyword();
      if (whileKeyword != null) {
        addOccurrence(whileKeyword);
      }
    }
    else {
      addOccurrence(statement.getFirstChild());
    }
  }
private void highlightLoopDeclaration(PsiLoopStatement statement)