DataStep plugin missing examples

[gian4820]

Describe the bug There is no example of how to use those variables declared in the DataStep. For example in a .json format:

{ "test1": "test1 value", "test2": "test2 value", "fields": { "nested": "This is nested", "anArray": [ "firstitem", "seconditem" ] } }

You can access test1, and test2 like this: command: ${stub.test1} and ${stub.test2}

Source page https://docs.rundeck.com/docs/manual/workflow-steps/builtin.html#data-step