System.Internal.DebugHandleTracker.HandleType.HandleEntry.StackParser.GetLine C# (CSharp) Method

                    private string GetLine() {
                        endIndex = releventStack.IndexOf('\r', startIndex);
                        if (endIndex < 0) {
                            endIndex = length - 1;
                        }

                        string line = releventStack.Substring(startIndex, endIndex - startIndex);
                        char ch;

                        while (endIndex < length && ((ch = releventStack[endIndex]) == '\r' || ch == '\n')) {
                            endIndex++;
                        }
                        if (startIndex == endIndex) return null;
                        startIndex = endIndex;
                        line = line.Replace('\t', ' ');
                        return line;
                    }