zendframework/zf2 — pull request #641 by mrclay (2011-11-29 14:27:03+00:00)
Title: Remove an IDE warning about invoking a variable that may not be invokable.

Before this change, PhpStorm could not tell that _getCamelCaseFilter() returned an invokable, so it marked as a potential error the 2nd line of _normalizeName() where $filter is invoked as a function.