code: function() {
      let parameters = this.parameters
      for (let parameterName in parameters) {
        let parameter = parameters[parameterName]
        if (!(parameter instanceof OperationParameter)) {
          parameter = o(_.assign({name: parameterName}, parameter),
                        OperationParameter)
          parameters[parameterName] = parameter // set it back
        }
      }
    }
docs: ***************************************************************************
  @method _initializeParameters
  @description Initializes all parameters. If a parameter is not an instance
  of {@link carbond.OperationParameter}, it will be instantiated
  as such.
  @returns {undefined}