public DockerStopCommand setGracePeriod(int value) {
    super.addCommandArguments("time", Integer.toString(value));
    return this;
  }
@Test
  public void testSetGracePeriod() throws Exception {
    dockerStopCommand.setGracePeriod(GRACE_PERIOD);
    assertEquals("stop", StringUtils.join(",",
        dockerStopCommand.getDockerCommandWithArguments()
            .get("docker-command")));
    assertEquals("foo", StringUtils.join(",",
        dockerStopCommand.getDockerCommandWithArguments().get("name")));
    assertEquals("10", StringUtils.join(",",
        dockerStopCommand.getDockerCommandWithArguments().get("time")));
    assertEquals(3, dockerStopCommand.getDockerCommandWithArguments().size());
  }