Files.createDirectory(nodePath.indicesPath.resolve(dirName));
            excludedDirs.add(dirName);
        }
        if (nodeEnv.availableIndexFoldersForPath(nodePath).size() != numIndices) {
            throw new IllegalStateException("bad size");
        }
        if (nodeEnv.availableIndexFoldersForPath(nodePath, excludedDirs::contains).size() != 0) {
            throw new IllegalStateException("bad size");
        }
    }