else {
String mimeType = null;
IDocumentCharsetDetector jspProvider = getDocumentEncodingDetector();
Reader fullPreparedReader = getFullPreparedReader();
BufferedLimitedReader limitedReader = new BufferedLimitedReader(fullPreparedReader, CodedIO.MAX_BUF_SIZE);
jspProvider.set(limitedReader);
if (jspProvider instanceof IJSPHeadContentDetector) {
mimeType = ((IJSPHeadContentDetector) jspProvider).getContentType();
fullPreparedReader.reset();
}