wmde/WikibaseDataModel — pull request #324 by thiemowmde (2014-12-10 14:48:41+00:00)
Title: Remove misleading return doc

`Serializable::unserialize` isn't supposed to `@return` anything. Warning, this is a possible breaking change (in contrast to all other `unserialize` implementations in all other components, they never returned anything, but this one did).