DisplayedPartOutput dSource = (DisplayedPartOutput)getDisplayedPartConnectable(connection.getSource());
DisplayedPartInput dDest = (DisplayedPartInput)getDisplayedPartConnectable(connection.getDestination());
DisplayedConnection displayedConnection = new DisplayedConnection(dSource, dDest);
// bind connections
dSource.bindDisplayedConnection(displayedConnection);
dDest.bindDisplayedConnection(displayedConnection);
// Add to the map.
connectionDisplayMap.put(displayedConnection.getConnection(), displayedConnection);