support multiple invoice repositories (#1084)

src/Repository/Query/ActivityQuery.php

@@ -41,9 +41,9 @@ class ActivityQuery extends ProjectQuery
 
     /**
      * @param bool $globalsOnly
-     * @return ActivityQuery
+     * @return self
      */
-    public function setGlobalsOnly($globalsOnly): ActivityQuery
+    public function setGlobalsOnly($globalsOnly): self
     {
         $this->globalsOnly = (bool) $globalsOnly;
 
@@ -60,9 +60,9 @@ class ActivityQuery extends ProjectQuery
 
     /**
      * @param Project|int|null $project
-     * @return ActivityQuery
+     * @return self
      */
-    public function setProject($project = null): ActivityQuery
+    public function setProject($project = null): self
     {
         $this->project = $project;
 

src/Repository/Query/BaseQuery.php

@@ -83,7 +83,7 @@ class BaseQuery
 
     /**
      * @param User $user
-     * @return $this
+     * @return self
      */
     public function setCurrentUser(User $user)
     {
@@ -102,7 +102,7 @@ class BaseQuery
 
     /**
      * @param int $page
-     * @return $this
+     * @return self
      */
     public function setPage($page)
     {
@@ -118,7 +118,7 @@ class BaseQuery
 
     /**
      * @param int $pageSize
-     * @return $this
+     * @return self
      */
     public function setPageSize($pageSize)
     {
@@ -138,7 +138,7 @@ class BaseQuery
      * You need to validate carefully if this value is used from a user-input.
      *
      * @param string $orderBy
-     * @return $this
+     * @return self
      */
     public function setOrderBy($orderBy)
     {
@@ -154,7 +154,7 @@ class BaseQuery
 
     /**
      * @param string $order
-     * @return $this
+     * @return self
      */
     public function setOrder($order)
     {
@@ -205,7 +205,7 @@ class BaseQuery
 
     /**
      * @param SearchTerm|null $searchTerm
-     * @return BaseQuery
+     * @return self
      */
     public function setSearchTerm(?SearchTerm $searchTerm)
     {