return crs;
}
public DerivedCRS createDerivedCRS(String code) throws FactoryException {
final String key = toKey(code);
DerivedCRS crs = (DerivedCRS) cache.get(key);
if (crs == null) {
try {
cache.writeLock(key);
crs = (DerivedCRS) cache.peek(key);
if (crs == null) {