if (nDims > MAX_CACHED)
return new Validator_custom( clss, nDims, subclassOk );
Key key = new Key( clss, nDims, subclassOk );
Validator v = validators.get( key );
if (v == null)
{
v = new Validator_custom( clss, nDims, subclassOk );
validators.put( key, v );