virtual int numInternalFeatures() = 0;
//! Returns the feature by zero-based index: features in the history or not
virtual std::shared_ptr<ModelAPI_Feature> internalFeature(const int theIndex) = 0;
+ //! Performs synchronization of transactions with the module document:
+ //! If some document is not active (by undo of activation) but in memory,
+ //! on activation the transactions must be synchronised because all redos performed
+ //! wihtout this participation
+ virtual void synchronizeTransactions() = 0;
//! To virtually destroy the fields of successors
