Add providers plugin.

src/Netzmacht/Contao/Leaflet/Mapper/AbstractLayerMapper.php

@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * @package    dev
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2014 netzmacht creative David Molineus
+ * @license    LGPL 3.0
+ * @filesource
+ *
+ */
+
+namespace Netzmacht\Contao\Leaflet\Mapper;
+
+
+abstract class AbstractLayerMapper extends AbstractMapper
+{
+    protected static $type;
+
+    public function match(\Model $model)
+    {
+        return parent::match($model) && $model->type === static::$type;
+    }
+}