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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 GetFormattedSources(self, event):
 """Retrieves the formatted sources related to the event. Args: event (EventObject):
 event. Returns: tuple: containing: str: full source string or None if no event formatter was found. str: short source string or None if no event formatter was found. """

    event_formatter = self.GetEventFormatter(event)
    if not event_formatter:
      return None, None

    return event_formatter.GetSources(event)