ICalendar.Serialize.to_ics

You're seeing just the function to_ics, go back to ICalendar.Serialize module for more information.
Link to this function

to_ics(data, options \\ [])

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Serialize data to iCalendar format.

Supported options for serializing a calendar:

  • vendor a string containing the vendor's name. Will produce PRODID:-//ICalendar//My Name//EN.