GridDB How to properly delete a database with containers?

I'm working with GridDB CE in a Java application and trying to programmatically delete a database. However, I'm encountering that error. > 145045 JC_DATABASE_NOT_EMPTY ERROR Checking of client request failed. Number of DB containers may not be zero. Delete all containers in the DB targeted for deletion. I want to delete an entire database (or simulate that by removing all its data). For example, before running an integration test or during cleanup, I want to ensure the DB is clean.

import com.toshiba.mwcloud.gs.*;

public class GridDBCleanup {
    public static void main(String[] args) throws Exception {
        Properties props = new Properties();
        props.setProperty("notificationAddress", "239.0.0.1");
        props.setProperty("notificationPort", "31999");
        props.setProperty("clusterName", "myCluster");
        props.setProperty("user", "admin");
        props.setProperty("password", "admin");

        GridStore store = GridStoreFactory.getInstance().getGridStore(props);

        // Attempt to drop database (simulated cleanup)
        store.dropDatabase("testDB"); // This line throws the error
    }
}

I've Tried Ensured that testDB exists and is accessible. Verified that containers are still present using getContainerNames. Tried iterating and deleting containers manually before calling dropDatabase, but I want to know if there's a better/more idiomatic way to clean a DB. What is the correct approach to fully delete a database or simulate that in GridDB? Do I have to delete all containers manually before using dropDatabase()? Is there a built-in way to list and delete all containers programmatically? Any help or a working snippet would be appreciated!