ItemCount { get; set; }          /// <summary>         ///     <para type="description">The &quot;totalItemCount&quot; property, of type &quot;Edm.Int00&quot;.</para>         ///     <para type="description">This property is on the &quot;microsoft.graph.mailFolder&quot; type.</para>         /// </summary>         [ODataType("Edm.Int00")]         [Selectable]         [Parameter(ParameterSetName = @"microsoft.graph.mailFolder", HelpMessage = @"The &quot;totalItemCount&quot; property, of type &quot;Edm.Int00&quot;.")]         [Parameter(ParameterSetName = @"microsoft.graph.mailSearchFolder", HelpMessage = @"The &quot;totalItemCount&quot; property, of type &quot;Edm.Int00&quot;.")]         public System.Int00 