private Map<DimensionId, String> getGlobalDimensions() {
        Map<DimensionId, String> globalDimensions = new LinkedHashMap<>(applicationDimensions.getDimensions());
        globalDimensions.putAll(nodeDimensions.getDimensions());
        return globalDimensions;
    }
Returns a merged map of all global dimensions.
metrics-proxy/src/main/java/ai/vespa/metricsproxy/core/MetricsManager.java