Support for embedded documents / dbrefs

Problem

I remember there was a message about adding DBRef support via a plugin or something, is this coming anytime soon? An since it's a somewhat related issue, why there's a way to define an array of embedded documents and (as far as a I can tell) no way of embedding a single document? [code block] And the output: $ node test.js TypeError: undefined is not a function at CALL_NON_FUNCTION_AS_CONSTRUCTOR (native) at Schema.path (/home/bobry/code/mb/support/mongoose/lib/mongoose/schema.js:119:24) at Schema.add (/home/bobry/code/mb/support/mongoose/lib/mongoose/schema.js:88:12) at new Schema (/home/bobry/code/mb/support/mongoose/lib/mongoose/schema.js:26:10) at Object.<anonymous> (/home/bobry/code/mb/test.js:9:15) at Module._compile (node.js:462:23) at Module._loadScriptSync (node.js:469:10) at Module.loadSync (node.js:338:12) at Object.runMain (node.js:522:24) at Array.<anonymous> (node.js:756:12)