is there any function like Importing_variables?

[SamYuan1990]

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Describe the enhancement
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is there any function to get env variable for this action?
so that, when I am using env variables, I can avoid exporting-variables function overwrite or conflicts with user's customer value by an env validation process?
ref
https://github.com/actions/toolkit/tree/main/packages/core#exporting-variables

Code Snippet
If applicable, add a code snippet to show the api enhancement.

  const default_values = "DEFAULT";
  const customer_values = core.Importing_variables("value");
  //logging...
  if (customer_values != "") {
    //logging...
    core.exportVariable("value", default_values);
  }
  //logging...
  //processing

Additional information
Add any other context about the feature here.