private TaskModel loadTaskQuietly(String taskId) {
        try {
            return executionDAOFacade.getTaskModel(taskId);
        } catch (Exception e) {
            return null;
        }
    }
Executes and persists the results of an async {@link WorkflowSystemTask}.

@param systemTask The {@link WorkflowSystemTask} to be executed.
@param taskId The id of the {@link TaskModel} object.
core/src/main/java/com/netflix/conductor/core/execution/AsyncSystemTaskExecutor.java