code: function onDeleteFail(model, params, reason) {
    Flux.dispatch(actionTypes.API_DELETE_FAIL, {
      model: model,
      params: params,
      reason: reason,
    })
    return Promise.reject(reason)
  }
docs: Handler for API delete fail
  @param {Model} model
  @param {*} params used to call the `model.delete(params)`
  @param {Object} result
  @return {Object}