add phpdocs

lib/plugins/authplain/_test/escaping.test.php

@@ -103,9 +103,11 @@ class helper_plugin_authplain_escaping_test extends DokuWikiTest {
             $this->assertEquals($escaped, $result[2]);
         }
     }
-    
 }
 
+/**
+ * Class auth_plugin_authplainharness
+ */
 class auth_plugin_authplainharness extends auth_plugin_authplain {
 
     /**
@@ -115,12 +117,16 @@ class auth_plugin_authplainharness extends auth_plugin_authplain {
         $this->_pregsplit_safe = $bool;
     }
 
+    /**
+     * @return bool|mixed
+     */
     public function getPregsplit_safe(){
         return $this->_pregsplit_safe;
     }
 
     /**
      * @param string $line
+     * @return array
      */
     public function splitUserData($line){
         return $this->_splitUserData($line);