在不同的 argo 工作流程中重用模板/步骤

Question

假设有两个不同的 argo 工作流使用相同的模板 whalesay：

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: workflow1
spec:
  # invoke the whalesay template with
  # "hello world" as the argument
  # to the message parameter
  entrypoint: whalesay
  arguments:
    parameters:
    - name: message
      value: hello world

  templates:
  - name: whalesay
    inputs:
      parameters:
      - name: message       
    container:
      # run cowsay with that message input parameter as args
      image: docker/whalesay
      command: [cowsay]
      args: ["{{inputs.parameters.message}}"]

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: workflow2
spec:
  entrypoint: hello-hello-hello

  templates:
  - name: hello-hello-hello
    # Instead of just running a container
    # This template has a sequence of steps
    steps:
    - - name: hello1            
        template: whalesay
        arguments:
          parameters:
          - name: message
            value: "hello1"
    - - name: hello2a           
        template: whalesay
        arguments:
          parameters:
          - name: message
            value: "hello2a"

  - name: whalesay
    inputs:
      parameters:
      - name: message
    container:
      image: docker/whalesay
      command: [cowsay]
      args: ["{{inputs.parameters.message}}"]

有没有办法避免在两个不同的工作流程中重复（和维护）相同的模板？也许类似于 WorklowTemplate 的东西，例如：

apiVersion: ...
kind: TemplateTemplate
name: whalesay
inputs:
   parameters:
   - name: message
container:
   image: docker/whalesay
   command: [cowsay]
   args: ["{{inputs.parameters.message}}"]

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: workflow1
metadata:
  name:
spec:
  entrypoint: whalesay
  arguments:
    parameters:
    - name: message
      value: hello world
  templates:
  - templateRef: whalesay

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: workflow2
spec:
  entrypoint: hello-hello-hello

  templates:
  - name: hello-hello-hello
    # Instead of just running a container
    # This template has a sequence of steps
    steps:
    - - name: hello1            
        templateRef: whalesay
        arguments:
          parameters:
          - name: message
            value: "hello1"
    - - name: hello2a           
        templateRef: whalesay
        arguments:
          parameters:
          - name: message
            value: "hello2a"