ExAws.Request.HttpClient.request

You're seeing just the callback request, go back to ExAws.Request.HttpClient module for more information.
Link to this callback

request(method, url, req_body, headers, http_opts)

View Source

Specs

request(
  method :: http_method(),
  url :: binary(),
  req_body :: binary(),
  headers :: [{binary(), binary()}, ...],
  http_opts :: term()
) ::
  {:ok, %{status_code: pos_integer(), headers: any()}}
  | {:ok, %{status_code: pos_integer(), headers: any(), body: binary()}}
  | {:error, %{reason: any()}}