# File lib/sass/selector/simple_sequence.rb, line 41
      def resolve_parent_refs(super_seq)
        # Parent selector only appears as the first selector in the sequence
        return [self] unless @members.first.is_a?(Parent)

        return super_seq.members if @members.size == 1
        unless super_seq.members.last.is_a?(SimpleSequence)
          raise Sass::SyntaxError.new("Invalid parent selector: " + super_seq.to_a.join)
        end

        super_seq.members[0...-1] +
          [SimpleSequence.new(super_seq.members.last.members + @members[1..-1])]
      end