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

@param featureTable feature table
@param featureId    feature id
@param tableIcon    when true and a feature icon is not found, query for a
matching table icon
@return icon row