private ILogger GetLoggerCore(Type sourceType, string categoryName, LogEventLevel?level, Func <string, LogEventLevel, bool> filter, LogEventSendMode mode = LogEventSendMode.Customize, RendingConfiguration renderingOptions = null) { var loggerStateNamespace = sourceType == null ? categoryName : TypeNameHelper.GetTypeDisplayName(sourceType); var minLevel = level ?? _loggingConfiguration.GetMinimumLevel(loggerStateNamespace); return(new CosmosLoggerProxy(sourceType ?? typeof(object), minLevel, loggerStateNamespace, filter, mode, _loggingConfiguration.Rendering.ToCalc(renderingOptions), new LogPayloadSender(_logPayloadClientProviders))); }