code: protected DataType put(Class<?> clazz, int type, String name) {
          DataType dataType = new DataType(type, name);
          map.put(clazz, dataType);
          return dataType;
      }
docs: Create a new DataType instance for the given type and name, and place it in the map with the given Class as key.
  
  @param clazz the key
  @param type the type of {@code java.sql.Types}
  @param name the name of the type corresponding to the used dbms
  @return the DataType created