Correct? reuse of model event creator in machine (xstate)

createFund.ts

// https://stately.ai/viz/8cf34aba-b602-4f85-93d2-cc4c2d1f4c06

import { createModel } from 'xstate/lib/model'

interface Fund {
  label: string
  $target: number
  createdAt: Date
  updatedAt: Date
}

type FundCreateInfo = Omit<Fund, 'createdAt' | 'updatedAt'>

interface Portfolio {
  fund?: Fund
}

interface PortfolioActions {
  events: {
    createFund: (value: FundCreateInfo) => Fund
  }
}

const portfolioModel = createModel<Portfolio, PortfolioActions>({
  fund: undefined,
}, {
  events: {
    createFund: (fund: FundCreateInfo) => {
      const date = new Date()
      return {
        createdAt: date,
        updatedAt: date,
        ...fund
      }
    }
  }
})

export const portfolioMachine = portfolioModel.createMachine({
  context: portfolioModel.initialContext,
  initial: 'empty',
  states: {
    empty: {
      on: {
        createFund: {
          target: 'withBaseFund',
          actions: portfolioModel.assign({
            fund: (_, fundInfo) => portfolioModel.events.createFund(fundInfo)
          })
        }
      }
    },
    withBaseFund: {
      type: 'final'
    }
  }
})