ClusterItem.cs

    public class ClusterItem : Java.Lang.Object, IClusterItem
    {
        public string m_sMoreCustomInformation { get; set; }
        
        public ClusterItem(double lat, double lon, string sMoreCustomInformation)
        {
            //...
            m_sMoreCustomInformation = sMoreCustomInformation;
        }
        
        //...
    }