@GetMapping("/{id}")
    @RequiresPermissions("system:pluginHandler:edit")
    public ShenyuAdminResult detailRule(@PathVariable("id") @Valid
                                        @Existed(provider = PluginHandleMapper.class,
                                                message = "rule not exited") final String id) {
        PluginHandleVO pluginHandleVO = pluginHandleService.findById(id);
        return ShenyuAdminResult.success(ShenyuResultMessage.DETAIL_SUCCESS, pluginHandleVO);
    }
get plugin handle detail.

@param id plugin handle id.
@return {@linkplain ShenyuAdminResult}
shenyu-admin/src/main/java/org/apache/shenyu/admin/controller/PluginHandleController.java