Add the lazy method to delay the creation of models in the database w…

…hen using model factories (#18823)

src/Illuminate/Database/Eloquent/FactoryBuilder.php

@@ -102,6 +102,19 @@ public function states($states)
         return $this;
     }
 
+    /**
+     * Create a model and persist it in the database if requested.
+     *
+     * @param  array  $attributes
+     * @return \Closure
+     */
+    public function lazy(array $attributes = [])
+    {
+        return function () use ($attributes) {
+            return $this->create($attributes);
+        };
+    }
+
     /**
      * Create a collection of models and persist them to the database.
      *