Optional
displayTime: booleantrue to return the format including the time
// returns the format for date-fns library without datetime
JMap.Util.Date.getDateFnsLocale()
// returns the format for date-fns library without datetime
JMap.Util.Date.getDateFnsLocale(true)
JMap.Util.Date.getDateFnsLocale
Returns the format for date-fns library.