presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/metadata/DatabaseMetadataModule.java/DaoSupplierProvider/get
class DaoSupplierProvider:        @Override
        public DaoSupplier<T> get()
        {
            checkState(injector != null, "injector was not set");
            IDBI dbi = injector.getInstance(Key.get(IDBI.class, ForMetadata.class));
            return new DaoSupplier<>(dbi, type);
        }