[Serializer] Name Converter

| Q                | A
| --------------- | ---
| Doc fix?      | no
| New docs? | yes symfony/symfony#13120
| Applies to   | 2.7

This is the documentation for the Serializer Name Converter feature.
could you please add an anchor above this line, to make sure it's BC? (oh dear, doc starts to worry about BC too :(...

``.. _using-camelized-method-names-for-underscored-attributes:``