licenses function
Implementation
Stream<LicenseEntry> licenses() async* {
final montserrat = await rootBundle.loadString(
'$_kLicenseRoot/Montserrat.txt',
);
final mulish = await rootBundle.loadString(
'$_kLicenseRoot/Mulish.txt',
);
yield LicenseEntryWithLineBreaks(<String>['Montserrat'], montserrat);
yield LicenseEntryWithLineBreaks(<String>['Mulish'], mulish);
}