title: ABAddressBook ABSourceName
body: <p>How can I get the name of an <code>ABAddressBook</code> source to display it?
  (I know the enums <code>kABSourceTypeLocal</code>, <code>kABSourceTypeExchange</code>, ... )</p>
  
  <p>I don't mean the source-type-name you get with <em><code>ABRecordCopyValue</code>(source,<code>ABSourceNameProperty</code>)</em>, but the real name which is shown in Apple's Contacts-App as a table section, for example: 
  "Exchange Google" or "iCloud"</p>