private StoreSession OpenMailboxSession(StoreMailboxData mailbox)
        {
            Guid          activityId       = (ActivityContext.ActivityId != null) ? ActivityContext.ActivityId.Value : Guid.Empty;
            AssistantBase assistant        = this.Assistant as AssistantBase;
            string        nonLocalizedName = this.Assistant.NonLocalizedName;
            Guid          mailboxGuid      = mailbox.MailboxGuid;
            StoreSession  result;

            try
            {
                ExchangePrincipal exchangePrincipal;
                if (mailbox.TenantPartitionHint != null)
                {
                    ADSessionSettings adSettings = ADSessionSettings.FromTenantPartitionHint(mailbox.TenantPartitionHint);
                    exchangePrincipal = ExchangePrincipal.FromLocalServerMailboxGuid(adSettings, this.DatabaseInfo.Guid, mailbox.Guid);
                }
                else
                {
                    exchangePrincipal = ExchangePrincipal.FromMailboxData(mailbox.Guid, this.DatabaseInfo.Guid, mailbox.OrganizationId ?? OrganizationId.ForestWideOrgId, Array <CultureInfo> .Empty);
                }
                if (mailbox.IsPublicFolderMailbox)
                {
                    StoreSession storeSession = PublicFolderSession.OpenAsAdmin(null, exchangePrincipal, null, CultureInfo.InstalledUICulture, string.Format("{0};Action={1}", "Client=TBA", this.Assistant.GetType().Name), null);
                    AssistantsLog.LogMailboxSucceedToOpenStoreSessionEvent(activityId, nonLocalizedName, assistant, mailboxGuid, mailbox.DisplayName, this);
                    result = storeSession;
                }
                else
                {
                    bool           flag     = false;
                    MailboxSession mailbox2 = this.DatabaseInfo.GetMailbox(exchangePrincipal, ClientType.TimeBased, this.Assistant.GetType().Name);
                    try
                    {
                        mailbox2.ReconstructExchangePrincipal();
                        mailbox2.ExTimeZone = ExTimeZone.CurrentTimeZone;
                        flag = true;
                        AssistantsLog.LogMailboxSucceedToOpenStoreSessionEvent(activityId, nonLocalizedName, assistant, mailboxGuid, mailbox.DisplayName, this);
                        result = mailbox2;
                    }
                    finally
                    {
                        if (!flag)
                        {
                            mailbox2.Dispose();
                        }
                    }
                }
            }
            catch (ObjectNotFoundException ex)
            {
                string text    = "MailboxNotFound";
                string message = string.Format("{0}: {1}", this, text);
                string value   = string.Format("{0}:{1}", text, mailbox.MailboxGuid);
                ExTraceGlobals.TimeBasedDatabaseJobTracer.TraceError((long)this.GetHashCode(), message);
                AssistantsLog.LogMailboxFailedToOpenStoreSessionEvent(activityId, nonLocalizedName, assistant, ex, mailboxGuid, mailbox.DisplayName, this);
                throw new SkipException(new LocalizedString(value), ex);
            }
            catch (StorageTransientException ex2)
            {
                string message2 = string.Format("{0}: Could not open mailbox store session due to storage transient error: {1}", this, ex2.Message);
                ExTraceGlobals.TimeBasedDatabaseJobTracer.TraceError((long)this.GetHashCode(), message2);
                AssistantsLog.LogMailboxFailedToOpenStoreSessionEvent(activityId, nonLocalizedName, assistant, ex2, mailboxGuid, mailbox.DisplayName, this);
                Interlocked.Increment(ref this.mailboxesFailedToOpenStoreSessionCount);
                throw;
            }
            catch (Exception ex3)
            {
                string message3 = string.Format("{0}: Could not open mailbox store session due to error: {1}", this, ex3.Message);
                ExTraceGlobals.TimeBasedDatabaseJobTracer.TraceError((long)this.GetHashCode(), message3);
                AssistantsLog.LogMailboxFailedToOpenStoreSessionEvent(activityId, nonLocalizedName, assistant, ex3, mailboxGuid, mailbox.DisplayName, this);
                Interlocked.Increment(ref this.mailboxesFailedToOpenStoreSessionCount);
                throw;
            }
            return(result);
        }