public void setTasks(List<WorkflowTask> tasks) {
            this.tasks = tasks;
        }
This is the task definition definied as part of the {@link WorkflowDef}. The tasks definied in
the Workflow definition are saved as part of {@link WorkflowDef#getTasks}
common/src/main/java/com/netflix/conductor/common/metadata/workflow/WorkflowTask.java