Cldr Calendars v1.15.0
Cldr Calendars

Cldr.Calendar.weeks_to_days

You're seeing just the function weeks_to_days, go back to Cldr.Calendar module for more information.
Link to this function

weeks_to_days(n)

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Specs

weeks_to_days(integer()) :: integer()

Returns the number of days in n weeks

Example 

iex> Cldr.Calendar.weeks_to_days(2)
14