logPluginError method
Log the fact that an error, described by the given message, was reported
by the given plugin.
Implementation
@override
void logPluginError(
  PluginData plugin,
  String code,
  String message,
  String stackTrace,
) {
  for (var service in _services) {
    service.logPluginError(plugin, code, message, stackTrace);
  }
}