    # File lib/chef/mixin/convert_to_class_name.rb, line 25
          def convert_to_class_name(str)
            rname = nil
            regexp = %r{^(.+?)(_(.+))?$}

            mn = str.match(regexp)
            if mn
              rname = mn[1].capitalize

              while mn && mn[3]
                mn = mn[3].match(regexp)
                rname << mn[1].capitalize if mn
              end
            end

            rname
          end