apollo-client/src/main/java/com/ctrip/framework/apollo/internals/AbstractConfigFile.java/AbstractConfigFile/AbstractConfigFile
class AbstractConfigFile:  public AbstractConfigFile(String namespace, ConfigRepository configRepository) {
    m_configRepository = configRepository;
    m_namespace = namespace;
    m_configProperties = new AtomicReference<>();
    propertiesFactory = ApolloInjector.getInstance(PropertiesFactory.class);
    initialize();
  }