Req.follow_redirects

You're seeing just the function follow_redirects, go back to Req module for more information.
Link to this function

follow_redirects(request, response)

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Follows redirects.

Examples

iex> Req.get!("http://api.github.com").status
# 23:24:11.670 [debug]  Req.follow_redirects/2: Redirecting to https://api.github.com/
200