private void validateLocatorMXBean(final VM vm, final DistributedMember member) {
    vm.invoke("validateLocatorMXBean", () -> {
      LocatorMXBean locatorMXBean = awaitLocatorMXBeanProxy(member);
      assertThat(locatorMXBean).isNotNull();
    });
  }
Starts a locator with given configuration. If DS is already started it will use the same DS
geode-core/src/distributedTest/java/org/apache/geode/management/LocatorManagementDUnitTest.java