Verify that every Statistic can be successfully accessed.
final RangeStatistic r1 = s.getNumConnUsed();
assert( r1 != null );
final RangeStatistic r2 = s.getNumConnFree() ;
assert( r2 != null );
final RangeStatistic r3 = s.getConnRequestWaitTime();
assert( r3 != null );
final CountStatistic c1 = s.getNumConnFailedValidation() ;
assert( c1 != null );
final CountStatistic c2 = s.getNumConnTimedOut();
assert( c2 != null );
final CountStatistic c3 = s.getWaitQueueLength();
assert( c3 != null );
final CountStatistic c4 = s.getNumConnCreated();
assert( c4 != null );
final CountStatistic c5 = s.getNumConnDestroyed();
assert( c5 != null );
//final CountStatistic c6 = s.getNumConnOpened();
// assert( c6 != null );
//final CountStatistic c7 = s.getNumConnClosed();
// assert( c7 != null );
final CountStatistic c8 = s.getAverageConnWaitTime();
assert( c8 != null );
