--- /dev/null
+<?php
+
+namespace Drupal\crop;
+
+use Drupal\Component\Plugin\PluginInspectionInterface;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Defines the interface for entity provider integration plugin.
+ */
+interface EntityProviderInterface extends PluginInspectionInterface {
+
+ /**
+ * Returns the selection display label.
+ *
+ * @return string
+ * The selection display label.
+ */
+ public function label();
+
+ /**
+ * Gets URI of the image file.
+ *
+ * @param \Drupal\Core\Entity\EntityInterface $entity
+ * Entity being cropping.
+ *
+ * @return string|false
+ * URI as string or FALSE
+ */
+ public function uri(EntityInterface $entity);
+
+}