I have been hanging out a bit more with real users and have noticed a 
large gap that keeps occuring - between interaction without GeoTools and 
the outside world.

We really need a helper method to allow users to go between SRS and 
CoordinateReferneceSystem - I got this in a code example today:
> tx.setSrsName((String)fc.features().next().getDefaultGeometry().getUserData());

I suspect the correct replacement is here:

tx.setSrsName(ft.getDefaultGeometry().getAuthority().getIdentifier().toString() 
);

But really we need some additional methods for the CRS facade - so users stop 
guessing:

String CRS.encodeSRS( CoordinateReferneceSystem crs );
String CRS.decodeSRS( String srs );

Cheers,
Jody

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