first import

sites/all/modules/ctools/plugins/export_ui/ctools_export_ui.inc

@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * The default plugin exists only to provide the base class. Other plugins
+ * which do not provide a class will get this class instead. Any classes
+ * provided should use this class as their parent:
+ *
+ * @code
+ *   'handler' => array(
+ *     'class' => 'ctools_export_ui_mine',
+ *     'parent' => 'ctools_export_ui',
+ *   ),
+ * @endcode
+ *
+ * Using the above notation will ensure that this plugin's is loaded before
+ * the child plugin's class and avoid whitescreens.
+ */
+$plugin = array(
+  // As this is the base class plugin, it shouldn't declare any menu items.
+  'has menu' => FALSE,
+  'handler' => array(
+    'class' => 'ctools_export_ui',
+  ),
+);