docs: function (path, data, cb) {
      var lines = [];
      var field;
      for (field in data) {
        lines.push(field + '=' + encodeURIComponent(data[field]));
      }
      this.env.req({
        method:   'POST',
        protocol: this.options.authPt.protocol,
        host:     this.options.authPt.host,
        port:     this.options.authPt.port,
        path:     this.options.authPt.base + path,
        headers:  {'Content-Type': 'application/x-www-form-urlencoded'},
        postData: lines.join('&')
      }, cb);
    }