} // this information is cached because it's frequently used
private OSPlatform(string osPlatform)
{
if (osPlatform == null)
{
throw new ArgumentNullException(nameof(osPlatform));
}
if (osPlatform.Length == 0)
{
throw new ArgumentException(SR.Argument_EmptyValue, nameof(osPlatform));
}
_osPlatform = osPlatform;
IsCurrent = RuntimeInformation.IsCurrentOSPlatform(osPlatform);
}