+ ///! Adds a new sub-document by the identifier, or returns existing one if it is already exist
+ virtual std::shared_ptr<ModelAPI_Document> subDocument(std::string theDocID) = 0;
+
+ ///! Returns the id of the document
+ virtual const std::string& id() const = 0;
+
+ //! Returns the object in the group by the index (started from zero)
+ //! \param theGroupID group that contains an object
+ //! \param theIndex zero-based index of feature in the group
+ //! \param theHidden if it is true, it counts also the features that are not in tree
+ virtual std::shared_ptr<ModelAPI_Object> object(const std::string& theGroupID,
+ const int theIndex,
+ const bool theHidden = false) = 0;
+
+ //! Returns the number of objects in the group of objects
+ //! If theHidden is true, it counts also the features that are not in tree
+ virtual int size(const std::string& theGroupID, const bool theHidden = false) = 0;
+
+ /// To virtually destroy the fields of successors
+ MODELAPI_EXPORT virtual ~ModelAPI_Document();
+
+ /// Creates a construction cresults
+ virtual std::shared_ptr<ModelAPI_ResultConstruction> createConstruction(
+ const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex = 0) = 0;
+ /// Creates a body results
+ virtual std::shared_ptr<ModelAPI_ResultBody> createBody(
+ const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex = 0) = 0;
+ /// Creates a part results
+ virtual std::shared_ptr<ModelAPI_ResultPart> createPart(
+ const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex = 0) = 0;
+ /// Creates a group results
+ virtual std::shared_ptr<ModelAPI_ResultGroup> createGroup(
+ const std::shared_ptr<ModelAPI_Data>& theFeatureData, const int theIndex = 0) = 0;
+
+ //! Returns a feature by result (owner of result)
+ virtual std::shared_ptr<ModelAPI_Feature> feature(
+ const std::shared_ptr<ModelAPI_Result>& theResult) = 0;