EstimatedTimeOfArrivalFormatter    
    class EstimatedTimeOfArrivalFormatter(context: Context, timeFormatType: Int = TimeFormat.NONE_SPECIFIED) : ValueFormatter<Calendar, SpannableString> 
Formats trip related data for displaying in the UI
Parameters
context
an application context instance
timeFormatType  
a value indicating whether the time should be formatted in 12 or 24 hour format
Functions
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                  Formats an update to a SpannableString representing the estimated time to arrival