ProgressBar.Indeterminate.render

You're seeing just the function render, go back to ProgressBar.Indeterminate module for more information.
Link to this function

render(custom_format \\ [bars: ["=---", "-=--", "--=-", "---="], done: "=", left: "|", right: "|", bars_color: [], done_color: [], interval: 500, width: :auto], fun)

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