### Standard Test Setup

```java
@BeforeClass
public static void beforeClass() {
    runner = new OpenSearchRunner();
    runner.build(newConfigs().clusterName("TestCluster").numOfNode(1));
    client = runner.client();
}

@Before
public void before() {
    runner.admin().indices().prepareDelete("_all").execute().actionGet();
}

@AfterClass

Therefore we register test cluster by using the following syntax:

    def someClusterProvider = testClusters.register('someCluster') { ... }

This registers a potential testCluster named `somecluster` and provides a provider instance, but doesn't create it yet nor configures it. This makes the gradle configuration phase more efficient by 
doing less.