# File kwartz.rb, line 319
            def empty2pair
                Kwartz::assert() unless self.tag_type == :empty_tag
                stag_fv = self
                etag_fv = stag_fv.dup
                #
                etag_fv.tag_type   = :end_tag
                etag_fv.attr_str   = ''
                etag_fv.head_space = ''
                etag_fv.head_text  = ''
                #
                stag_fv.tag_type   = :start_tag
                stag_fv.tail_space = ''
                stag_fv.tail_text  = ''
                # 
                return stag_fv, etag_fv
            end