+/*!
+ * Searches for Part the feature that contains in result the reference to the given document.
+ * The result may be disabled.
+ * \param theMain document that contains the searched feature
+ * \param theSub document that is searched, the resulting feature references to it
+ * \returns null if not found
+ */
+MODELAPI_EXPORT FeaturePtr findPartFeature(const DocumentPtr& theMain, const DocumentPtr& theSub);
+