public List<String> getLabels() {
        List<String> result = new ArrayList<>(aggregationLabels);
        result.removeAll(scopeLabels);
        return result;
    }
Get labels no scope related.

@return labels
oap-server/analyzer/meter-analyzer/src/main/java/org/apache/skywalking/oap/meter/analyzer/dsl/ExpressionParsingContext.java