Ms::Rest' has no member named 'notes'

While I have added part of the code to line 2500 in this source file
https://github.com/musescore/MuseScore/blob/bdbaf5a27e8b45f1f193303fd35…
and attempt compile with mingw, an error occurred with Ms::Rest' has no member named 'notes', what functions does Ms::Rest contain?

void ExportMusicXml::rest(Rest* rest, int staff)
{
static char table2[] = "CDEFGAB";
#ifdef DEBUG_TICK
qDebug("ExportMusicXml::rest() oldtick=%d", tick);
#endif

QList nl = rest->notes();

const PageFormat* pf = _score->pageFormat();
const double pageHeight = getTenthsFromInches(pf->size().height());

//foreach(Note* rest, nl) {
QString val;

attr.doAttr(xml, false);
QString noteTag = QString("note");

if (preferences.musicxmlExportLayout && pf) {
double measureX = getTenthsFromDots(rest->measure()->pagePos().x());
double measureY = pageHeight - getTenthsFromDots(rest->measure()->pagePos().y());
double noteX = getTenthsFromDots(rest->pagePos().x());
double noteY = pageHeight - getTenthsFromDots(rest->pagePos().y());

noteTag += QString(" default-x=\"%1\"").arg(QString::number(noteX - measureX,'f',2));
noteTag += QString(" default-y=\"%1\"").arg(QString::number(noteY - measureY,'f',2));
}
//}/////////////////////////////////////////

if (!rest->visible() ) {
noteTag += QString(" print-object=\"no\"");
}

Command line output:
[ 49%] Building CXX object mscore/CMakeFiles/mscore.dir/exportxml.cpp.obj
C:\Users\yanli\Desktop\MuseScore-master\mscore\exportxml.cpp: In member function
'void Ms::ExportMusicXml::rest(Ms::Rest*, int)':
C:\Users\yanli\Desktop\MuseScore-master\mscore\exportxml.cpp:2500:28: error: 'cl
ass Ms::Rest' has no member named 'notes'
QList nl = rest->notes();
^
mscore\CMakeFiles\mscore.dir\build.make:6656: recipe for target 'mscore/CMakeFil
es/mscore.dir/exportxml.cpp.obj' failed
mingw32-make[3]: *** [mscore/CMakeFiles/mscore.dir/exportxml.cpp.obj] Error 1
mingw32-make[3]: Leaving directory 'C:/Users/yanli/Desktop/MuseScore-master/buil
d.release'
CMakeFiles\Makefile2:232: recipe for target 'mscore/CMakeFiles/mscore.dir/all' f
ailed
mingw32-make[2]: *** [mscore/CMakeFiles/mscore.dir/all] Error 2
mingw32-make[2]: Leaving directory 'C:/Users/yanli/Desktop/MuseScore-master/buil
d.release'
Makefile:136: recipe for target 'all' failed
mingw32-make[1]: *** [all] Error 2
mingw32-make[1]: Leaving directory 'C:/Users/yanli/Desktop/MuseScore-master/buil
d.release'
Makefile.mingw:27: recipe for target 'release' failed
mingw32-make: *** [release] Error 2