Add Fermata
There are two places you can add fermata at.
"atNote"
Add fermata at (previously added) note.
builder
.addNote(0, "C3", "2n")
.addFermata("atNote");
"atMeasureEnd"
Add fermata at measure end.
builder.addFermata("atMeasureEnd");
💡 You can as well use Score.Fermata enum values.