MockInstance mi = new MockInstance();
Connector conn = mi.getConnector("root", new PasswordToken(""));
conn.tableOperations().create("foo");
BatchWriter bw = conn.createBatchWriter("foo", new BatchWriterConfig());
bw.addMutation(nm(new byte[] {0}));
bw.addMutation(nm(new byte[] {0, 0}));
bw.addMutation(nm(new byte[] {0, 1}));
bw.addMutation(nm(new byte[] {0, 1, 0}));