### Question:
ElasticSearchClient implements IElasticSearchClient { @Override public Client getClient() { return client; }  @Override Client start(); @Override List<ElasticSearchNode> getNodeList(); @Override String getHTTPResult( String query ); void setNodeList( List<ElasticSearchNode> nodeList ); int getHttpPort(); @Override Client getClient(); @Override String getHost(); @Override int getTransportPort(); @Override String getClusterName(); @Override String toString();  }### Answer:
@Test public void test() { assertNotNull(elasticSearchClient); assertNotNull(elasticSearchClient.getClient()); }