# File lib/symetrie_com/acts_as_better_nested_set.rb, line 553
        def self_and_siblings(scope = {})
          if self[parent_col_name].nil? || self[parent_col_name].zero?
            [self]
          else
            self.class.find_in_nested_set(:all, { :conditions => "#{scope_condition} AND #{sibling_condition}", :order => "#{prefixed_left_col_name}" }, scope)
          end
        end