+
+/*!
+ Returns a container of referenced feature to the current object in the object document.
+ \param theObject an object, which will be casted to a feature type
+ \param theRefFeatures an output container
+ */
+void MODULEBASE_EXPORT refsToFeatureInFeatureDocument(const ObjectPtr& theObject,
+ std::set<FeaturePtr>& theRefFeatures);
+
+
+/*!
+ Returns true if the object if a sub child of the feature. The feature is casted to the
+ composite one. If it is possible, the sub object check happens. The method is applyed
+ recursively to the feature subs.
+ \param theObject a candidate to be a sub object
+ \param theFeature a candidate to be a composite feature
+ \return a boolean value
+ */
+bool MODULEBASE_EXPORT isSubOfComposite(const ObjectPtr& theObject, const FeaturePtr& theFeature);
+
+
+/*!
+* Returns true if the result is a sub object of some composite object
+* \param theObject a result object
+* \returns boolean value
+*/
+bool MODULEBASE_EXPORT isSubOfComposite(const ObjectPtr& theObject);
+
+
+/*!
+* Shows a dialog box about references. Ask whether they should be also removed.
+* \param theFeatures a list of features
+* \param theReferences a map of all references to the features
+* \param theParent a parent widget for the question message box
+* \param theReferencesToDelete an out set for references features to be removed
+* \return true if in message box answer is Yes
+*/
+bool MODULEBASE_EXPORT askToDelete(const std::set<FeaturePtr> aFeatures,
+ const std::map<FeaturePtr, std::set<FeaturePtr> >& theReferences,
+ QWidget* theParent,
+ std::set<FeaturePtr>& theReferencesToDelete);
+
+/*!
+* Converts a list of objects to set of corresponded features. If object is result, it is ingored
+* because the feauture only might be removed. But if result is in a parameter group, the feature
+* of this parameter is to be removed
+* \param theObjects a list of objects
+* \param theFeatures an out conteiner of features
+*/
+void MODULEBASE_EXPORT convertToFeatures(const QObjectPtrList& theObjects, std::set<FeaturePtr>& theFeatures);
+