sonata-project/SonataSeoBundle — pull request #61 by ahlee2326 (2014-06-12 07:53:50+00:00)
Title: Appending metadata instead of overriding.

There is a case when you want to append the same metadatas.

For example, 'og:image', we could to provide several of 'og:image' metadatas for sharer to crawl.