[auto] Merge from Core
[auto] Merge from Core

    • #a4fae5c — Allow to call getValidCallback() without argument. (Ivan Enderlin, 2013-06-07)

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Merge remote branch 'library-core/master'

vcgato29/Central,Metalaka/Central,Grummfy/Central,Grummfy/Central,vcgato29/Central,Metalaka/Central