@Test
public void testAddCommand() {

    pluginDocTree.addPlugin("pluginDoc1", pluginDoc1);
    pluginDocTree.addCommand("pluginDoc1", qavCommand1);
    List<CommandDoc> commands = pluginDocTree.getCommands("pluginDoc1");
    assertThat(commands.size(), is(1));
    assertThat(commands.get(0), is(qavCommand1));
}