revert unused method deletion

src/Mixins/RelationshipsExtraMethods.php

@@ -416,7 +416,17 @@ public function getThroughParent(): \Closure
         };
     }
 
-    public function applyExtraConditions(): \Closure
+    /**
+     * Get the farParent for the HasManyThrough relationship.
+     */
+    public function getFarParent()
+    {
+        return function () {
+            return $this->farParent;
+        };
+    }
+
+    public function applyExtraConditions()
     {
         return function (PowerJoinClause $join) {
             foreach ($this->getQuery()->getQuery()->wheres as $condition) {