Translation key provider for custom signature completion

[stof]

When trying to configure a custom parameter completion provider as described in the doc, the TranslationKey provider does not appear in the list of available filters

[Haehnchen]

because it not supported right now :)

Translations make only sense if filter by domain is possible, but thats only ui improvements. on todo list

[stof]

Well, according to the doc, it is supported when configuring it through hashtags, defaulting to messages if there is no provider for the domain: http://symfony2-plugin.espend.de/extension/method_parameter.html#hash-tags
Why not allowing it with the same fallback when defining method signatures in the settings (I prefer to avoid putting hashtags specific to the plugin in the code of KnpMenu)