Class AtomMember

Keyword arguments:
collection -- AtomPubCollection instance carrying this member
source -- resource string to handle
slug -- hint on how to generate the name of the resource and
used as the last part of the edit and edit-media IRIs (default:None)
media_type -- mime-type for this member (default:u'application/atom+xml')
entry_id_creator -- callable which must return an unicode object used
for the id element of the entry (default:None)

The entry_id_creator callable, if provided, must take a bridge.Element
as unique parameter. This instance containing the newly created atom
entry or the one provided via the 'member' parameter.

When not provided the id of entry defaults to a default urn:uuid value.

Overrides: EntryMember.__init__