Elixir v1.12.0

System.untrap_signal

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

untrap_signal(signal, id)

View Source (since 1.12.0)

Specs

untrap_signal(signal(), id) :: :ok | {:error, :not_found} when id: term()

Removes a previously registered signal with id.