Horde_Registry::hasMethod PHP Method

    public function hasMethod($method, $app = null)
    {
        return $this->_doHasSearch($method, $app, 'methods');
    }

 /**
  * Returns an array with all the child nodes
  *
  * @return DAV\INode[]
  */
 public function getChildren()
 {
     $apps = $this->_collections;
     foreach ($this->_registry->listApps() as $app) {
         if ($this->_registry->hasMethod('browse', $app)) {
             $apps[] = new Horde_Dav_Collection($app, array(), $this->_registry, $this->_mimedb);
         }
     }
     return $apps;
 }