symfony/symfony — pull request #12800 by bamarni (2014-12-02 10:07:38+00:00)
Title: [ExpressionLanguage] added default value in parse method

| Q | A
| ------------- | ---
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| License | MIT

I was trying to follow doc instructions from here : http://symfony.com/doc/2.5/components/expression_language/caching.html#using-parsed-and-serialized-expressions.