presto-session-property-managers/src/main/java/io/prestosql/plugin/session/db/DbSessionPropertyManager.java/DbSessionPropertyManager/getCatalogSessionProperties
class DbSessionPropertyManager:    @Override
    public Map<String, Map<String, String>> getCatalogSessionProperties(SessionConfigurationContext context)
    {
        // NOT IMPLEMENTED YET
        return ImmutableMap.of();
    }