How can I connect tasks in a workflow which do not produce / consume any data? How can I create task dependency?

[SandraGH5]

Miguel Toledo:
How can I connect tasks in a workflow which do not produce / consume any data? How can I create task dependency?

[SandraGH5]

Option 1

    @task
    def t2():
        ...
    @task
    def t3():
        ...
    @workflow
    def empty_wf():
        t2_node = create_node(t2)
        t3_node = create_node(t3)
        t3_node.runs_before(t2_node)

Option 2:

    @workflow
    def empty_wf2():
        t2_node = create_node(t2)
        t3_node = create_node(t3)
        t3_node >> t2_node

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