File extension icon on Mac

My application uses new proprie开发者_运维技巧tary file formats with extensions never been used before. I would like to associate specific icons to display my files in finder with nice iconography. As far as I know LaunchService is responsible to handle all these data, however I'm confused where, when and how shall I create associations.

Which entries I have to add to plist?

Where I need to actually register this extension - during installation? Is there any script for this?

Add a CFBundleDocumentTypes key to your plist, see Storing Document Types Information in the Application's Property List