docs: public static void convert(File srcImageFile, File destImageFile) {
  		Assert.notNull(srcImageFile);
  		Assert.notNull(destImageFile);
  		Assert.isFalse(srcImageFile.equals(destImageFile), "Src file is equals to dest file!");
  
  		final String srcExtName = FileUtil.extName(srcImageFile);
  		final String destExtName = FileUtil.extName(destImageFile);
  		if (StrUtil.equalsIgnoreCase(srcExtName, destExtName)) {
  			// 扩展名相同直接复制文件
  			FileUtil.copy(srcImageFile, destImageFile, true);
  		}
  
  		ImageOutputStream imageOutputStream = null;
  		try {
  			imageOutputStream = getImageOutputStream(destImageFile);
  			convert(read(srcImageFile), destExtName, imageOutputStream, StrUtil.equalsIgnoreCase(IMAGE_TYPE_PNG, srcExtName));
  		} finally {
  			IoUtil.close(imageOutputStream);
  		}
  	}