Scenic.ViewPort.Input.fetch_captures

You're seeing just the function fetch_captures, go back to Scenic.ViewPort.Input module for more information.
Link to this function

fetch_captures(viewport, captured_by \\ nil)

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Specs

fetch_captures(viewport :: Scenic.ViewPort.t(), captured_by :: nil | pid()) ::
  {:ok, list()}

Retrieve a list of input captured by the caller.

Returns: { :ok, list }