This class is used to collect statistical data about
transports. Since the nature of the data is specific to the type of
the statistics, no method is provided for access to data. Instead,
the accessor method is to be defined in the implementation, that
works together with the SelectionStrategy.
author: Nicolas Noffke version: $Id: StatisticsProvider.java,v 1.5 2004/05/06 12:40:00 nicolas Exp $