+ /*!
+ * \brief connectedFrom connection from an interface owned by another blocks (functional or group)
+ * Since the graph is oriented, and taking into account it modles a FPGA desing,
+ * there may be a single interface owned by another block (functional or group) that is connected to
+ * this interface. connecteFrom references such an interface if it exists.
+ */
+ ConnectedInterface* connectedFrom;
+
+ // patterns
+ QList<char>* outputPattern; //! only usefull for output interfaces