@Override public Pair<Double, Double> getRawExtrema(LayerConfiguration config) throws ConfigurationException { String layer = config.getPropertyValue(LayerConfiguration.LAYER_ID); double minimumValue = parseExtremum(config, LayerConfiguration.LEVEL_MINIMUMS, "minimum", layer, 0.0); double maximumValue = parseExtremum(config, LayerConfiguration.LEVEL_MAXIMUMS, "maximum", layer, 1000.0); return new Pair<>(minimumValue, maximumValue); }