run method
Runs this command.
The return value is wrapped in a Future if necessary and returned by
CommandRunner.runCommand.
Implementation
@override
void run() async {
// Validate the morpheme.yaml configuration
await _validateConfiguration();
// Process all ARB directories
await _processArbDirectories();
// Execute Flutter's gen-l10n command
await _executeFlutterGenL10n();
// Report successful completion
_reportSuccess();
}