Make an external HTTP GET request with headers

Makes an HTTP GET request with a custom header.

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Code sample

YAML

- get_message:
    call: http.get
    args:
      url: https://www.example.com/endpoint
      headers:
        Content-Type: "text/plain"
      query:
        some_val: "Hello World"
        another_val: 123
    result: the_message
- return_value:
    return: ${the_message.body}

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