code: @Bean
  	@ConditionalOnMissingBean(SpringAwareManagedChannelBuilder.class)
  	public SpringAwareManagedChannelBuilder managedChannelBuilder(
  			Optional<List<GrpcManagedChannelBuilderCustomizer>> customizers) {
  		return new SpringAwareManagedChannelBuilder(customizers);
  	}
docs: This is wrapper around gRPC's managed channel builder that is spring-aware