Removed the use of "$this" inside closures as it will not work and cause fatal error.
Removed the use of "$this" inside closures as it will not work and cause fatal error.

symfony2admingenerator/AdmingeneratorGeneratorBundle,Restless-ET/AdmingeneratorGeneratorBundle,symfony2admingenerator/AdmingeneratorGeneratorBundle,Restless-ET/AdmingeneratorGeneratorBundle,Restless-ET/AdmingeneratorGeneratorBundle