### Question:
OvsdbAutoAttachRemovedCommand extends AbstractTransactionCommand { @Override public void execute(ReadWriteTransaction transaction) { if (removedAutoAttachRows == null || removedAutoAttachRows.isEmpty()) { return; } final InstanceIdentifier<Node> nodeIId = getOvsdbConnectionInstance().getInstanceIdentifier(); final Optional<Node> ovsdbNode = SouthboundUtil.readNode(transaction, nodeIId); if (ovsdbNode.isPresent()) { final InstanceIdentifier<Node> ovsdbNodeIid = SouthboundMapper.createInstanceIdentifier(getOvsdbConnectionInstance().getNodeId()); for (final UUID autoAttachUuid : removedAutoAttachRows.keySet()) { final AutoattachKey autoAttachKey = getAutoAttachKeyToRemove(ovsdbNode.get(), autoAttachUuid); if (autoAttachKey != null) { final InstanceIdentifier<Autoattach> iid = ovsdbNodeIid .augmentation(OvsdbNodeAugmentation.class) .child(Autoattach.class, autoAttachKey); transaction.delete(LogicalDatastoreType.OPERATIONAL, iid); LOG.debug("AutoAttach table {} for Ovsdb Node {} is deleted", autoAttachUuid, ovsdbNode.get().getNodeId()); } else { LOG.warn("AutoAttach table {} not found for Ovsdb Node {} to delete", autoAttachUuid, ovsdbNode.get().getNodeId()); } } } } OvsdbAutoAttachRemovedCommand(OvsdbConnectionInstance key,
            TableUpdates updates, DatabaseSchema dbSchema); @Override void execute(ReadWriteTransaction transaction);  }### Answer:
@Test public void testExecute() { ovsdbAutoAttachRemovedCommand.execute(transaction); verify(transaction).delete(eq(LogicalDatastoreType.OPERATIONAL), eq(aaIid)); }