### Question:
BootstrappingNodesFactory { public BootstrappingNodes create() { bn = new BootstrappingNodes(); return bn; }  BootstrappingNodes create(); void load(); void save(); Path getLastNodeFile(); void setLastNodeFile(Path lastNodeFile); URL getNodesDefaultFile(); void setNodesDefaultUrl(URL nodesDefaultUrl); Path getNodesFile(); void setNodesFile(Path nodesFile);  }### Answer:
@Test public void testCreate() throws IOException { nodes = factory.create(); assertNotNull(nodes); assertFalse(nodes.hasLastNode()); assertFalse(nodes.hasBootstrappingNodes()); factory.load(); assertFalse(nodes.hasLastNode()); assertFalse(nodes.hasBootstrappingNodes()); }