Yggdrasil.Backend.connected

You're seeing just the function connected, go back to Yggdrasil.Backend module for more information.
Link to this function

connected(channel, pid \\ nil)

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Specs

connected(Yggdrasil.Channel.t(), nil | pid()) :: :ok | {:error, term()}

Generic connected message sender to a channel. Optionally receives the pid of the specific subscriber.