// ---- Results
JsonObject results = obj.get(kResults).getAsObject() ;
if ( ! results.get(kBindings).isArray() )
throw new ResultSetException("'bindings' must be an array") ;
JsonArray array = results.get(kBindings).getAsArray() ;
Iterator<JsonValue> iter = array.iterator() ;
for ( ; iter.hasNext() ; )
{
BindingMap b = BindingFactory.create() ;
JsonValue v = iter.next() ;