### Common functions

#### Language related

Import path: `<#import /utils.ftl as Utils>`

##### `getAvailableLanguages`

    Sequence getAvailableLanguages()

Returns the available languages for the current document as sequence. These sequence can be used for creating links for selecting the language:

```
<ul class="language-selector">
    <#list Lang.getAvailableLanguages()?sort as lang>
        <li class="${(lang==negotiatedLanguage)?then('selected', '')}">${lang}</li>
    </#list>
</ul>
```

This example uses the `list` directive from Freemarker to iterate over the available languages returned by `getAvailableLanguages` The Freemarker build-in `?then` is used together with the `negotiatedLanguage` variable to
check if the curent language is the selected language. If this is the case 
a CSS class is added to the HTML.