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

                    private static bool ContainsString(string str, string token) {
                        int stringLength = str.Length;
                        int tokenLength = token.Length;

                        for (int s = 0; s < stringLength; s++) {
                            int t = 0;
                            while (t < tokenLength && str[s + t] == token[t]) {
                                t++;
                            }
                            if (t == tokenLength) {
                                return true;
                            }
                        }
                        return false;
                    }