code: public static <T> T fillBean(T bean, ValueProvider<String> valueProvider, CopyOptions copyOptions) {
  		if (null == valueProvider) {
  			return bean;
  		}
  
  		return BeanCopier.create(valueProvider, bean, copyOptions).copy();
  	}
docs: 填充Bean的核心方法
  
  @param <T> Bean类型
  @param bean Bean
  @param valueProvider 值提供者
  @param copyOptions 拷贝选项，见 {@link CopyOptions}
  @return Bean