vector<Beam_segment>
Beam::get_beam_segments (Grob *me_grob, Grob **common)
{
+ /* ugh, this has a side-effect that we need to ensure that
+ Stem #'beaming is correct */
+ (void) me_grob->get_property ("quantized-positions");
+
Spanner *me = dynamic_cast<Spanner*> (me_grob);
extract_grob_set (me, "stems", stems);