Struct used by HTTP adapters to normalize HTTP requests.
The :url, :headers, and :body fields are omitted from Inspect
output as they may contain sensitive data.
Examples
iex> request = %Assent.HTTPAdapter.HTTPRequest{method: :get, url: "https://example.com"}
iex> inspect(request)
"#Assent.HTTPAdapter.HTTPRequest<method: :get, ...>"