private DataLabel getDataLabels(ImmutableMap<String, String> labels, Predicate<String> filter) {
        DataLabel dataLabel = new DataLabel();
        labels.keySet().stream().filter(filter).forEach(k -> dataLabel.put(k, labels.get(k)));
        return dataLabel;
    }
analyse intends to parse expression with input samples to meter-system metrics.

@param sampleFamilies input samples.
oap-server/analyzer/meter-analyzer/src/main/java/org/apache/skywalking/oap/meter/analyzer/Analyzer.java