@Override
    public CompletableFuture<Void> asyncRemoveTask(String workflowId, String taskId) {
        return CompletableFuture.runAsync(() -> removeTask(workflowId, taskId), executorService);
    }
Initializes the indexes templates task_log, message and event, and mappings.
es6-persistence/src/main/java/com/netflix/conductor/es6/dao/index/ElasticSearchDAOV6.java