### Question:
FlexibleWay implements ConnectableSegment { @Override public boolean canConnect(ConnectableSegment otherSegment) { Set<Node> commonNodes = getCommonNodesInternal(otherSegment); return !commonNodes.isEmpty(); } FlexibleWay(List<Node> nodes); @Override SegmentNodes getSegmentNodes(); @Override ConnectableNode getEndpointNodes(); @Override Set<Node> getCommonNode(ConnectableSegment otherSegment); @Override boolean canConnect(ConnectableSegment otherSegment); @Override void appendNodesBetween(Collection<Node> nodes, Node startNode, Node endNode); @Override boolean containsNodes(Node... nodes); @Override boolean canConnectNodesInDirection(Node startNode, Node endNode); @Override double getLength();  }### Answer:
@Test public void testCanConnect() throws Exception { assertCanConnect(true, 6, 4, 7); assertCanConnect(true, 1, 6, 7); assertCanConnect(true, 4, 6, 7); assertCanConnect(true, 5, 4, 7); assertCanConnect(true, 5, 3, 7); assertCanConnect(false, 7, 8, 9); }