apollo-client-config-data/src/main/java/com/ctrip/framework/apollo/config/data/extension/initialize/ApolloClientExtensionInitializeFactory.java/ApolloClientExtensionInitializeFactory/ApolloClientExtensionInitializeFactory
class ApolloClientExtensionInitializeFactory:  public ApolloClientExtensionInitializeFactory(Log log,
      ConfigurableBootstrapContext bootstrapContext) {
    this.log = log;
    this.apolloClientPropertiesFactory = new ApolloClientPropertiesFactory();
    this.apolloClientLongPollingExtensionInitializer = new ApolloClientLongPollingExtensionInitializer(log,
        bootstrapContext);
    this.apolloClientWebsocketExtensionInitializer = new ApolloClientWebsocketExtensionInitializer(log,
        bootstrapContext);
  }