CORE_EDITOR_IMAGE_SEARCH CORE Endpoint
  /rpc/core/?method=CORE_EDITOR_IMAGE_SEARCH  
  Get an editor specific list of images (from attachments).  
  PARAMETERS  
  Editor TinyMCE-4 [default]. (Currently only TinyMCE-4 is supported)
  ExcludeSite Y / N [default]. By default image attachments against your siste records are included
  Object Object which the attachments are stored against
  ObjectContext  
  RETURN  
  Data in format expected by editor. For example, TinyMCE-4 will return:
[
             {title: 'Dog', value: 'mydog.jpg'},
             {title: 'Cat', value: 'mycat.gif'}
        ]