ChromiumTracingDurationBeginEvent Class

await using var writer = ChromiumTracingWriter.Create("trace.json");
await writer.WriteEventAsync(new ChromiumTracingDurationBeginEvent
{
    Name = "Processing",
    Category = "compute",
    Timestamp = DateTimeOffset.UtcNow,
    ProcessId = Environment.ProcessId,
    ThreadId = Environment.CurrentManagedThreadId,
});

// The end event closes the last duration event that began on the same thread
await writer.WriteEventAsync(new ChromiumTracingDurationEndEvent
{
    Timestamp = DateTimeOffset.UtcNow,
    ProcessId = Environment.ProcessId,
    ThreadId = Environment.CurrentManagedThreadId,
});