The behavior of 'StringBuilder.AppendLine(ref StringBuilder.AppendInterpolatedStringHandler)' could vary based on the current user's locale settings. Replace this call in 'HierarchySerializer.ToString(StringBuilder, IHierarchy<object>)' with a call to 'StringBuilder.AppendLine(IFormatProvider, ref StringBuilder.AppendInterpolatedStringHandler)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)