Help with AbstractInfo & AbstractInfoProvider

Full code:

using CMS.Base; 
using CMS.DataEngine; 
using CMS.Helpers; 
using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web;

namespace EBIZ.Integration.CRM
{
    public class CRMContext : AbstractContext<CRMContext>
    {
        private CRMSystemType mCrmSystemType;

        public static CRMSystemType CRMSystemType
        {
            get
            {
                CRMContext current = ContextContainer<CRMContext>.Current;
                CRMSystemType crmSystemType = current.mCrmSystemType;
                if (crmSystemType == null)
                {
                    if (Enum.TryParse<CRMSystemType>(SettingsKeyInfoProvider.GetStringValue("EBIZMembershipCRMSystemType"), out crmSystemType))
                    {
                        current.mCrmSystemType = crmSystemType;
                    }
                    else
                    {
                        current.mCrmSystemType = CRM.CRMSystemType.NoCRM;
                    }
                }

                return crmSystemType;
            }
        }

        public static bool AllowKeyUserPromotion
        {
            get
            {
                return CRMSystemType == CRM.CRMSystemType.NoCRM;
            }
        }
    }
}