@Value("${channel-type}")
    void setChannelType(String channelType) {
        this.channelTypeEnum = ChannelTypeEnum.valueOf(channelType);
    }
NOTE module accessibility
@see com.navercorp.pinpoint.bootstrap.java9.module.ModuleSupport#addPermissionToValueAnnotation(JavaModule)
@author jaehong.kim
grpc/src/main/java/com/navercorp/pinpoint/grpc/client/config/ClientOption.java