collection助手函数返回think\Collection对象

helper.php

@@ -14,6 +14,7 @@
 //-------------------------
 
 use think\Cache;
+use think\Collection;
 use think\Config;
 use think\Cookie;
 use think\Db;
@@ -23,7 +24,6 @@ use think\exception\HttpResponseException;
 use think\Lang;
 use think\Loader;
 use think\Log;
-use think\model\Collection;
 use think\Request;
 use think\Response;
 use think\Session;

library/think/model/relation/MorphMany.php

@@ -160,6 +160,7 @@ class MorphMany extends Relation
      * @param array     $where 关联预查询条件
      * @param string    $relation 关联名
      * @param string    $subRelation 子关联
+     * @param \Closure  $closure 闭包
      * @return array
      */
     protected function eagerlyMorphToMany($where, $relation, $subRelation = '', $closure = false)