title: Extbase: get/save specific language of object
body: <p>In a CommandController, I need to sync objects with an external source. The source is multi-language and shall be mapped to localized records in Typo3.</p>
  
  <p>I just seem too blind to find options to ...</p>
  
  <p>a) get records in a specific language</p>
  
  <p>b) add/update records in a specific language
  ... (from a CommandController context).</p>
  
  <p>I was expecting this to be a function of the model (AbstractEntity) or maybe the repository, but could not find any public lang/sys_lang/localize-functions there.</p>
  
  <p>(Typo3 version 6.2)</p>