getInstructors method
Implementation
String getInstructors() {
///Use https://dart-lang.github.io/linter/lints/use_string_buffers.html
final StringBuffer buffer = StringBuffer();
if (instructors.isNotEmpty) {
buffer.write(instructors[0]);
for (int i = 1; i < instructors.length; i++) {
buffer.write(',${instructors[i]}');
}
}
return buffer.toString();
}