public static QQConnectProperties GetQQConnectProperties(
     this IDictionary <string, string> @this)
 {
     if (@this == null)
     {
         return(null);
     }
     if (@this.ContainsKey(QQConnectProperties.Key) == false)
     {
         return(null);
     }
     return(QQConnectProperties.From(@this[QQConnectProperties.Key]));
 }