void (@NotNull FileViewProvider viewProvider) { final Document document = viewProvider.getDocument(); assert document != null; final PsiFile psiFile = viewProvider.getPsi(viewProvider.getBaseLanguage()); for (Pair<Integer, RangeMarker> integerRangeMarkerPair : myRangesToReindent) { RangeMarker marker = integerRangeMarkerPair.second; final CharSequence charsSequence = document.getCharsSequence().subSequence(marker.getStartOffset(), marker.getEndOffset()); final int oldIndent = integerRangeMarkerPair.first; final TextRange[] whitespaces = CharArrayUtil.getIndents(charsSequence, marker.getStartOffset()); final int indentAdjustment = getNewIndent(psiFile, marker.getStartOffset()) - oldIndent; if (indentAdjustment != 0) adjustIndentationInRange(psiFile, document, whitespaces, indentAdjustment); } }