public static void closeAll(List<NamedReader> readers) {
        if (readers==null) return;
        for (Reader reader : readers) {
            try {
                reader.close();
            }
            catch (IOException e) {
                // Nothing to do about it
            }
        }
    }
Convenience method for closing a list of readers. Does nothing if the given reader list is null.
vespajlib/src/main/java/com/yahoo/io/reader/NamedReader.java