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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def GetSourceStrings(cls, event):
 """Retrieves the formatted source strings for a specific event object. Args: event (EventObject):
 event. Returns: list[str, str]: short and long version of the source of the event. """

    # TODO: change this to return the long variant first so it is consistent
    # with GetMessageStrings.
    formatter_object = cls.GetFormatterObject(event.data_type)
    return formatter_object.GetSources(event)