-#include "translator.icc"
-
-ADD_TRANSLATOR (Gregorian_ligature_engraver,
- /* descr */ "This is an abstract class. Subclasses such as Vaticana_ligature_engraver handle ligatures by glueing special ligature heads together.",
- /* creats*/ "",
- /* accepts */ "ligature-event",
- /* acks */ "note-head-interface rest-interface",
- /* reads */ "",
- /* write */ "");
+// no ADD_ACKNOWLEDGER / ADD_ACKNOWLEDGER / ADD_TRANSLATOR macro calls
+// since this class is abstract