@Test
  @Retry(3)
  public void killProcess_throwsUnsupportedOperationException() throws Exception {
    assertThatThrownBy(() -> attachProcessUtils.killProcess(fakePid))
        .isInstanceOf(UnsupportedOperationException.class)
        .hasMessage("killProcess(int) not supported by AttachProcessUtils");
  }
Unit tests for {@link AttachProcessUtils}.

<p>
Tests involving fakePid use {@link RetryRule} because the fakePid may become used by a real
process before the test executes.
geode-core/src/test/java/org/apache/geode/internal/process/AttachProcessUtilsTest.java