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wp-content/plugins/wordpress-seo/admin/interface-installable.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * WPSEO plugin file.
+ *
+ * @package WPSEO\Admin
+ */
+
+/**
+ * Represents the interface for an installable object.
+ */
+interface WPSEO_Installable {
+
+	/**
+	 * Runs the installation routine.
+	 *
+	 * @return void
+	 */
+	public function install();
+}