in telemetry/csharp/AwsToolkit.Telemetry.Events/Core/MetricDatumExtensionMethods.cs [91:100]
public static void AddMetadata(this MetricDatum metricDatum, string key, bool value)
{
string valueStr = "false";
if (value)
{
valueStr = "true";
}
metricDatum.AddMetadata(key, valueStr);
}