geopackage-sdk/src/main/java/mil/nga/geopackage/extension/style/FeatureStyleExtension.java
public IconRow getIconDefault(String featureTable, long featureId) {
        return getIcon(featureTable, featureId, null, true);
    }
public IconRow getIconDefault(String featureTable, long featureId) {
        return getIcon(featureTable, featureId, null, true);
    }
Get the default icon of the feature, searching in order: feature default
icon, table default icon

@param featureTable feature table
@param featureId    feature id
@return icon row