if (ops == nullptr)
    return errors::FailedPrecondition(
        "Trying to register filesystem without operations");

  if (ops->init == nullptr)
    return errors::FailedPrecondition(
        "Trying to register filesystem without `init` operation");

  if (ops->cleanup == nullptr)
    return errors::FailedPrecondition(
        "Trying to register filesystem without `cleanup` operation");

  return OkStatus();
}

<code>R15</code> points to the stack frame and should typically only be accessed using the
virtual registers <code>SP</code> and <code>FP</code>.
</p>

<p>
Load- and store-multiple instructions operate on a range of registers.
The range of registers is specified by a start register and an end register.
For example, <code>LMG</code> <code>(R9),</code> <code>R5,</code> <code>R7</code> would load

        FileUtil.writeBytes(propFile.getAbsolutePath(), "".getBytes());
        ComponentUtil.register(new DynamicProperties(propFile), "systemProperties");
        crawlingConfigHelper = new CrawlingConfigHelper();
        crawlingConfigHelper.init();
        ComponentUtil.register(crawlingConfigHelper, "crawlingConfigHelper");
        ComponentUtil.register(new WebConfigService() {
            @Override

	handler2 := func(req *testRequest) (resp *testResponse, err *RemoteErr) {
		r := RemoteErr(req.String)
		return nil, &r
	}
	errFatal(h1.Register(local, handler1))
	errFatal(h2.Register(local, handler2))

	errFatal(h1.Register(remote, handler1))
	errFatal(h2.Register(remote, handler2))

	// local to remote connection
	remoteConn := local.Connection(remoteHost)
	const testPayload = "Hello Grid World!"

        });
    }

    protected void registerRolesAndLabels(final RenderData data) {
        RenderDataUtil.register(data, "labelSettingEnabled", fessConfig.isFormAdminLabelInConfigEnabled());
        RenderDataUtil.register(data, "roleTypeItems", roleTypeService.getRoleTypeList());
        RenderDataUtil.register(data, "labelTypeItems", labelTypeService.getLabelTypeList());
    }

func TestCallbacksRemove(t *testing.T) {
	db, _ := gorm.Open(nil, nil)
	createCallback := db.Callback().Create()

	createCallback.Before("*").Register("c1", c1)
	createCallback.After("*").Register("c2", c2)
	createCallback.Before("c4").Register("c3", c3)
	createCallback.After("c2").Register("c4", c4)

	// callbacks: []string{"c1", "c3", "c4", "c2"}
	createCallback.Remove("c1")

            searchPaging(data, form);
        });
    }

    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "searchLogItems", searchLogService.getSearchLogList(searchLogPager)); // page navi

        // restore from pager
        copyBeanToBean(searchLogPager, form, op -> op.include(CONDITION_FIELDS));
    }

            RenderDataUtil.register(data, "endpoint", fessConfig.getStorageEndpoint());
            RenderDataUtil.register(data, "bucket", fessConfig.getStorageBucket());
            RenderDataUtil.register(data, "path", path);
            RenderDataUtil.register(data, "pathItems", createPathItems(path));
            RenderDataUtil.register(data, "parentId", createParentId(path));

    assertEquals(0, registry.getSubscribersForTesting(String.class).size());

    registry.register(new StringSubscriber());
    assertEquals(1, registry.getSubscribersForTesting(String.class).size());

    registry.register(new StringSubscriber());
    assertEquals(2, registry.getSubscribersForTesting(String.class).size());

    registry.register(new ObjectSubscriber());
    assertEquals(2, registry.getSubscribersForTesting(String.class).size());

    protected void registerEnvItems(final RenderData data) {
        RenderDataUtil.register(data, "envItems", getEnvItems());
    }

    protected void registerPropItems(final RenderData data) {
        RenderDataUtil.register(data, "propItems", getPropItems());
    }

    protected void registerFessPropItems(final RenderData data) {
        RenderDataUtil.register(data, "fessPropItems", getFessPropItems(fessConfig));
    }