code: public static <T extends Throwable> T convertFromOrSuppressedThrowable(Throwable throwable, Class<T> exceptionClass) {
  		return convertFromOrSuppressedThrowable(throwable, exceptionClass, true);
  	}
docs: 转化指定异常为来自或者包含指定异常
  
  @param <T> 异常类型
  @param throwable 异常
  @param exceptionClass 定义的引起异常的类
  @return 结果为null 不是来自或者包含
  @since 4.3.2