AssetBundleGraph.IntegratedGUIGrouping.GroupingOutput C# (CSharp) Method

        private void GroupingOutput(BuildTarget target, 
			NodeData node, 
			ConnectionPointData inputPoint,
			ConnectionData connectionToOutput, 
			Dictionary<string, List<Asset>> inputGroupAssets, 
			Action<ConnectionData, Dictionary<string, List<Asset>>, List<string>> Output)
        {
            ValidateGroupingKeyword(
                node.GroupingKeywords[target],
                () => {
                    throw new NodeException("Grouping Keyword can not be empty.", node.Id);
                },
                () => {
                    throw new NodeException(String.Format("Grouping Keyword must contain {0} for numbering: currently {1}", AssetBundleGraphSettings.KEYWORD_WILDCARD, node.GroupingKeywords[target]), node.Id);
                }
            );

            var outputDict = new Dictionary<string, List<Asset>>();

            var mergedGroupedSources = new List<Asset>();

            foreach (var groupKey in inputGroupAssets.Keys) {
                mergedGroupedSources.AddRange(inputGroupAssets[groupKey]);
            }

            var groupingKeyword = node.GroupingKeywords[target];
            var split = groupingKeyword.Split(AssetBundleGraphSettings.KEYWORD_WILDCARD);
            var groupingKeywordPrefix  = split[0];
            var groupingKeywordPostfix = split[1];

            foreach (var source in mergedGroupedSources) {
                var targetPath = source.GetAbsolutePathOrImportedPath();

                var regex = new Regex(groupingKeywordPrefix + "(.*?)" + groupingKeywordPostfix);
                var match = regex.Match(targetPath);

                if (match.Success) {
                    var newGroupingKey = match.Groups[1].Value;
                    if (!outputDict.ContainsKey(newGroupingKey)) outputDict[newGroupingKey] = new List<Asset>();
                    outputDict[newGroupingKey].Add(source);
                }
            }

            Output(connectionToOutput, outputDict, null);
        }