Called by Lightstreamer Kernel to check that a User is enabled to activate a Push Notification subscription. In this default implementation, the Metadata Adapter poses no restriction.  

Edition Note: Push Notifications is an optional feature, available depending on Edition and License Type. To know what features are enabled by your license, please see the License tab of the Monitoring Dashboard (by default, available at /dashboard). 

public: void NotifyMpnSubscriptionActivation(string user, string sessionID, TableInfo table, MpnSubscriptionInfo mpnSubscription);

public virtual void NotifyMpnSubscriptionActivation(string user, string sessionID, TableInfo table, MpnSubscriptionInfo mpnSubscription);

Public virtual Function NotifyMpnSubscriptionActivation(user As string, sessionID As string, table As TableInfo, mpnSubscription As MpnSubscriptionInfo) As void