code: function (propertyName) {
        var value = this.client[propertyName];
        if (! _.isUndefined(this[propertyName])) {
          // pass, defer to resource manager prototype properties
        }
        else if (_.isFunction(value)) {
          // copy functions (including the error ctors) by direct reference
          this[propertyName] = value;
        }
        else if (_.contains(this.client.serviceCallParams, propertyName)) {
          // default service call params which are not function values are proxied
          // via getter functions
          this[propertyName] = function () { return this.client[propertyName]; };
        }
        // all other properties are assumed to be client configuration, and
        // should be accessed by referencing the ``client`` instance property.
      }
docs: links a single property from the client (identified by ``propertyName`` to ``this`` instance