@GetMapping
    public ShenyuAdminResult queryPlugins(@RequestParam(name = "name", required = false) final String name,
                                          @RequestParam(name = "enabled", required = false) final Integer enabled,
                                          @Existed(message = "namespace is not existed",
                                                  provider = NamespaceMapper.class)
                                          @RequestParam(name = "namespaceId") final String namespaceId,
                                          @NotNull @RequestParam(name = "currentPage") final Integer currentPage,
                                          @NotNull @RequestParam(name = "pageSize") final Integer pageSize) {
        CommonPager<NamespacePluginVO> commonPager = namespacePluginService.listByPage(new NamespacePluginQuery(name, enabled, new PageParameter(currentPage, pageSize), namespaceId));
        return ShenyuAdminResult.success(ShenyuResultMessage.QUERY_SUCCESS, commonPager);
    }
query plugins of namespace.

@param name        plugin name.
@param enabled     plugin enabled.
@param namespaceId namespace id.
@param currentPage current page.
@param pageSize    page size.
@return {@linkplain ShenyuAdminResult}
shenyu-admin/src/main/java/org/apache/shenyu/admin/controller/NamespacePluginController.java