docs: public static boolean isTrivialTable(SymbolTable table)
      {
          if (table == null)         return true;
          if (table.isSystemTable()) return true;
          if (table.isLocalTable()) {
              // this is only true when there are no local
              // symbols defined
              // and there are no imports with any symbols
              if (table.getMaxId() == table.getSystemSymbolTable().getMaxId()) {
                  return true;
              }
          }
          return false;
      }