add im clear function

.gitignore

@@ -0,0 +1,3 @@
+.idea
+/vendor/
+composer.lock

src/IdentityMap.php

@@ -90,4 +90,10 @@ public function markTracked($key)
     {
         return $this->trackedRelations[] = $key;
     }
+
+    public function clear()
+    {
+        $this->trackedRelations = [];
+        $this->items = [];
+    }
 }

src/Populator.php

@@ -151,19 +151,25 @@ protected function populateRelation(Model $model, string $relationName, ?array $
     private function initRelationPopulators(): void
     {
         $this->relationPopulators = [
-            MorphTo::class       => new MorphToPopulator($this->resolver, $this->uow, $this),
-            HasMany::class       => new HasManyPopulator($this->resolver, $this->uow, $this),
+            MorphTo::class => new MorphToPopulator($this->resolver, $this->uow, $this),
+            HasMany::class => new HasManyPopulator($this->resolver, $this->uow, $this),
             BelongsToMany::class => new BelongsToManyPopulator($this->resolver, $this->uow, $this),
-            BelongsTo::class     => new BelongsToPopulator($this->resolver, $this->uow, $this),
-            HasOne::class        => new HasOnePopulator($this->resolver, $this->uow, $this),
-            MorphOne::class      => new MorphOnePopulator($this->resolver, $this->uow, $this),
-            MorphMany::class     => new MorphManyPopulator($this->resolver, $this->uow, $this),
-            MorphToMany::class   => new MorphToManyPopulator($this->resolver, $this->uow, $this),
+            BelongsTo::class => new BelongsToPopulator($this->resolver, $this->uow, $this),
+            HasOne::class => new HasOnePopulator($this->resolver, $this->uow, $this),
+            MorphOne::class => new MorphOnePopulator($this->resolver, $this->uow, $this),
+            MorphMany::class => new MorphManyPopulator($this->resolver, $this->uow, $this),
+            MorphToMany::class => new MorphToManyPopulator($this->resolver, $this->uow, $this),
         ];
     }
 
     private function extractRelation(Model $model, string $relationName): Relation
     {
         return call_user_func([$model, $relationName]);
     }
+
+
+    public function clear()
+    {
+        $this->clear();
+    }
 }

src/UnitOfWork.php

@@ -84,7 +84,7 @@ protected function doDestroy(): void
                 $model->delete();
             }
         }
-        $this->toPersist = [];
+        $this->toDestroy = [];
     }
 
     public function onFlush(callable $fn): void
@@ -100,4 +100,8 @@ private function doOnFlush(): void
 
         $this->onFlushInstructions = [];
     }
+
+    public function clear(): void {
+        $this->map->clear();
+    }
 }