def truncate_revisions!(options = nil)
      options = {:limit => self.class.acts_as_revisionable_options[:limit], :minimum_age => self.class.acts_as_revisionable_options[:minimum_age]} unless options
      revision_record_class.truncate_revisions(self.class, self.id, options)
    end
def truncate_revisions!(options = nil)
      options = {:limit => self.class.acts_as_revisionable_options[:limit], :minimum_age => self.class.acts_as_revisionable_options[:minimum_age]} unless options
      revision_record_class.truncate_revisions(self.class, self.id, options)
    end
Truncate the number of revisions kept for this record. Available options are :limit and :minimum_age.