Astarte.DataAccess.Interface.retrieve_interface_row

You're seeing just the function retrieve_interface_row, go back to Astarte.DataAccess.Interface module for more information.
Link to this function

retrieve_interface_row(realm, interface_name, major_version, opts \\ [])

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Specs

retrieve_interface_row(String.t(), String.t(), integer(), keyword()) ::
  {:ok, keyword()} | {:error, atom()}