def unregister_ui(review_ui):
 if (not issubclass(review_ui, FileAttachmentReviewUI)):
  raise TypeError(u'Only FileAttachmentReviewUI subclasses can be unregistered')
 try:
  _file_attachment_review_uis.remove(review_ui)
 except ValueError:
  logging.error((u'Failed to unregister missing review UI %r' % review_ui))
  raise ValueError(u'This review UI was not previously registered')

def unregister_ui ( review_ui ) : if ( not issubclass ( review_ui , FileAttachmentReviewUI ) ) : raise TypeError ( u'Only FileAttachmentReviewUI subclasses can be unregistered' ) try : _file_attachment_review_uis . remove ( review_ui ) except ValueError : logging . error ( ( u'Failed to unregister missing review UI %r' % review_ui ) ) raise ValueError ( u'This review UI was not previously registered' )
unregisters a review ui class .