geopackage-sdk/src/main/java/mil/nga/geopackage/extension/style/FeatureStyleExtension.java
public List<Long> getAllTableIconIds(String featureTable) {
        List<Long> iconIds = null;
        StyleMappingDao mappingDao = getTableIconMappingDao(featureTable);
        if (mappingDao != null) {
            iconIds = mappingDao.uniqueRelatedIds();
        }
        return iconIds;
    }
public List<Long> getAllTableIconIds(String featureTable) {
        List<Long> iconIds = null;
        StyleMappingDao mappingDao = getTableIconMappingDao(featureTable);
        if (mappingDao != null) {
            iconIds = mappingDao.uniqueRelatedIds();
        }
        return iconIds;
    }
Get all the unique icon row ids the table maps to

@param featureTable feature table
@return icon row ids