bugfix
* static function was not as static defined
* api doc updated

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3181 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3182 1f8fe7d8-47f0-464c-8d0a-336f4953ab05