StaffGroup.multipleInstruments constructor
Factory: Create a group for multiple instances of same instrument
Uses BracketType.line to indicate related but independent parts
Implementation
factory StaffGroup.multipleInstruments(
List<Staff> staves,
String instrumentName,
) {
return StaffGroup(
staves: staves,
bracket: BracketType.line,
name: instrumentName,
);
}