code: public <T> void addRepository(JpaRepositoryConfig<T> config) {
  		checkNotInitialized();
  		Class<?> resourceClass = config.getResourceClass();
  		if (repositoryConfigurationMap.containsKey(resourceClass)) {
  			throw new IllegalArgumentException(resourceClass.getName() + " is already registered");
  		}
  		repositoryConfigurationMap.put(resourceClass, config);
  	}
docs: Adds the repository to this module.
  
  @param configuration
  to use