function tagstart_deps_header($attr)
 {
     $err = $this->checkAttributes($attr, array("name", "prepend", "path"));
     if (PEAR::isError($err)) {
         return $err;
     }
     // TODO check name
     $header = new CodeGen_Dependency_Header($attr["name"]);
     if (isset($attr['path'])) {
         $header->setPath($attr["path"]);
     }
     if (isset($attr['prepend'])) {
         $header->setPrepend($attr["prepend"]);
     }
     $this->extension->addHeader($header);
 }