code: private List<Row> getTable(String name)
     {
        List<Row> result = m_tables.get(name);
        if (result == null)
        {
           result = Collections.emptyList();
        }
        return result;
     }
docs: Retrieve table data, return an empty result set if no table data is present.
  
  @param name table name
  @return table data