Q: Whole rest woe

[David Petrou]

I'm trying to get whole rests in different voices that are on the same
staff to be separated by vertical space.

I tried:
  \property Staff.MultiMeasureRest \override #'staff-position = #3
  R1
in one voice, and
  \property Staff.MultiMeasureRest \override #'staff-position = #-3
  R1
in another.

The rests move away from the center of the staff, but they are still
overlapping.  I'm guessing that the staff-position that I select is
being used for voices.  I tried to get around this by removing the
Multi_measure_rest_engraver from the StaffContext and placing it into
the VoiceContext, but I couldn't get that to work.  Maybe I'm doing
that wrong.

Any ideas?

Thanks,
david