in src/Amazon.AspNetCore.Identity.Cognito/Extensions/CognitoServiceCollectionExtensions.cs [134:141]
private static void ServiceClientBeforeRequestEvent(object sender, Amazon.Runtime.RequestEventArgs e)
{
Amazon.Runtime.WebServiceRequestEventArgs args = e as Amazon.Runtime.WebServiceRequestEventArgs;
if (args == null || !args.Headers.ContainsKey(UserAgentHeader) || args.Headers[UserAgentHeader].Contains(_userAgentSuffix))
return;
args.Headers[UserAgentHeader] = args.Headers[UserAgentHeader] + " " + _userAgentSuffix;
}