apollo-client-config-data/src/main/java/com/ctrip/framework/apollo/config/data/ApolloClientConfigDataAutoConfiguration.java/ApolloClientConfigDataAutoConfiguration/configPropertySourcesProcessor
class ApolloClientConfigDataAutoConfiguration:  @ConditionalOnMissingBean(PropertySourcesProcessor.class)
  @Bean
  public static ConfigPropertySourcesProcessor configPropertySourcesProcessor() {
    return new ConfigPropertySourcesProcessor();
  }