@Test
  public void setStartupCompletionActionUsesValue() {
    Runnable myRunnable = () -> {
    };
    Builder builder = new Builder();
    builder.setStartupCompletionAction(myRunnable);
    assertThat(builder.getStartupCompletionAction())
        .isSameAs(myRunnable);

  }
Unit tests for {@link ServerLauncher.Builder}. Extracted from {@link ServerLauncherTest}.
geode-core/src/test/java/org/apache/geode/distributed/ServerLauncherBuilderTest.java