whole_func_string: function () {
              var self = this,
                  out = {};
              this._keys.forEach(function (key, i) {
                  out[key] = self._values[i];
              });
              return out;
          }
func_code_string: function () {
              var self = this,
                  out = {};
              this._keys.forEach(function (key, i) {
                  out[key] = self._values[i];
              });
              return out;
          }
func_documentation_string: Shallow to json method.
  @method sjl.stdlib.SjlMap#toJSON
  @returns {{}}