<PackageReference Include="Serilog.Sinks.OpenTelemetry" Version="4.2.0" />

Serilog.Sinks.OpenTelemetry.Formatting.CleanMessageTemplateFormatter

Matches the `:lj` clean formatting style now employed by Serilog.Expressions, Serilog.Sinks.Console, and elsewhere. In this mode, strings embedded in message templates are unquoted, and structured data is rendered as JSON.
namespace Serilog.Sinks.OpenTelemetry.Formatting { internal static class CleanMessageTemplateFormatter { public static string Format(MessageTemplate messageTemplate, IReadOnlyDictionary<string, LogEventPropertyValue> properties, IFormatProvider formatProvider); } }