log method
Implementation
void log(DataRequestLabel label, String message, {int logLevel = 1}) {
if (_logLevel >= logLevel) {
final now = DateTime.now();
final timestamp =
'${now.second.toString().padLeft(2, '0')}:${now.millisecond.toString().padLeft(3, '0')}';
print('$timestamp ${' ' * label.indentation * 2}[$label] $message');
}
}