--- /dev/null
+<?php
+
+namespace Drupal\crop;
+
+use Drupal\Core\Entity\EntityBundleListenerInterface;
+use Drupal\Core\Entity\Schema\DynamicallyFieldableEntityStorageSchemaInterface;
+use Drupal\Core\Entity\Sql\SqlEntityStorageInterface;
+
+/**
+ * Provides an interface defining an crop storage controller.
+ */
+interface CropStorageInterface extends SqlEntityStorageInterface, DynamicallyFieldableEntityStorageSchemaInterface, EntityBundleListenerInterface {
+
+}