presto-accumulo/src/main/java/io/prestosql/plugin/accumulo/AccumuloModule.java/AccumuloModule/ConnectorProvider
class AccumuloModule:        @Inject
        public ConnectorProvider(AccumuloConfig config)
        {
            requireNonNull(config, "config is null");
            this.instance = config.getInstance();
            this.zooKeepers = config.getZooKeepers();
            this.username = config.getUsername();
            this.password = config.getPassword();
        }