public static Guid GetGuid(this switch_event e)
{
return(e.GetHeader("Unique-ID") == null ? Guid.Empty : Guid.Parse(e.GetHeader("Unique-ID").value));
}
public static String GetValueOfHeader(this switch_event e, String headerName, String defaultValue = "")
{
var head = e.GetHeader(headerName);
return(head == null ? defaultValue : head.value);
}