code: public <T extends Object> T load(Class<T> clazz, Object hashKey, DynamoDBMapperConfig config) {
          return load(clazz, hashKey, null, config);
      }
docs: Loads an object with the hash key given and a configuration override.
  This configuration overrides the default provided at object construction.
  
  @see DynamoDBMapper#load(Class, Object, Object, DynamoDBMapperConfig)