public static void addCurSizeAllMemTables(final StreamsMetricsImpl streamsMetrics,
                                              final RocksDBMetricContext metricContext,
                                              final Gauge<BigInteger> valueProvider) {
        addMutableMetric(
            streamsMetrics,
            metricContext,
            valueProvider,
            CURRENT_SIZE_OF_ALL_MEMTABLES,
            CURRENT_SIZE_OF_ALL_MEMTABLES_DESCRIPTION
        );
    }
@Test
    public void shouldAddCurSizeAllMemTablesMetric() {
        final String name = "cur-size-all-mem-tables";
        final String description = "Approximate size of active and unflushed immutable memtables in bytes";
        runAndVerifyMutableMetric(
            name,
            description,
            () -> RocksDBMetrics.addCurSizeAllMemTables(streamsMetrics, ROCKSDB_METRIC_CONTEXT, VALUE_PROVIDER)
        );
    }