NLog.LogFactory.GetConfigurationForLogger C# (CSharp) Method

        internal LoggerConfiguration GetConfigurationForLogger(string name, LoggingConfiguration configuration)
        {
            TargetWithFilterChain[] targetsByLevel = new TargetWithFilterChain[LogLevel.MaxLevel.Ordinal + 1];
            TargetWithFilterChain[] lastTargetsByLevel = new TargetWithFilterChain[LogLevel.MaxLevel.Ordinal + 1];

            if (configuration != null && this.IsLoggingEnabled())
            {
                this.GetTargetsByLevelForLogger(name, configuration.LoggingRules, targetsByLevel, lastTargetsByLevel);
            }

            InternalLogger.Debug("Targets for {0} by level:", name);
            for (int i = 0; i <= LogLevel.MaxLevel.Ordinal; ++i)
            {
                StringBuilder sb = new StringBuilder();
                sb.AppendFormat(CultureInfo.InvariantCulture, "{0} =>", LogLevel.FromOrdinal(i));
                for (TargetWithFilterChain afc = targetsByLevel[i]; afc != null; afc = afc.NextInChain)
                {
                    sb.AppendFormat(CultureInfo.InvariantCulture, " {0}", afc.Target.Name);
                    if (afc.FilterChain.Count > 0)
                    {
                        sb.AppendFormat(CultureInfo.InvariantCulture, " ({0} filters)", afc.FilterChain.Count);
                    }
                }

                InternalLogger.Debug(sb.ToString());
            }

            return new LoggerConfiguration(targetsByLevel);
        }