code: function _gpfGenSuperMember (superMethod, method) {
      return function GpfSuperableMethod () {
          var previousSuper = this._super,
              result;
          // Add a new ._super() method pointing to the base class member
          this._super = superMethod;
          try {
              // Execute the method
              result = method.apply(this, arguments);
          } finally {
              // Remove it after execution
              if (undefined === previousSuper) {
                  delete this._super;
              } else {
                  this._super = previousSuper;
              }
          }
          return result;
      };
  }
docs: Generates a closure in which this._super points to the base method of the overridden member
  
  @param {Function} superMethod
  @param {Function} method
  @return {Function}
  @gpf:closure