[1326] how to access plugin inside of vuex 1.0.0-rc4

Hello,

I wanted to give the current rc-4 a spin but don't understand how to access the plugin instance inside of Vuex. plugins/apolloClient.js

import { ApolloClient, createNetworkInterface } from 'apollo-client'
import { getTokenFromStorage } from '../util/auth-helpers'
import 'isomorphic-fetch'

export default ({app, store}) => {
  const networkInterface = createNetworkInterface({
    uri: API_ENDPOINT,
    transportBatching: true
  })

  const apolloOptions = {
    networkInterface,
    dataIdFromObject: r => r.id
  }
  const apolloClient = new ApolloClient(apolloOptions)
  app.apolloClient = apolloClient
  return apolloClient
}

Inside of my store/index.js

import apolloClient from '~/plugins/apolloClient.js'
(...)
export const actions = {
someAction(){
(...)
apolloClient.query(SOME_QUERY) // => does not work.. query not defined
}
}

How is it possible to access the plugin instance or maybe even {app.apolloClient} inside of Vuex now? Thanks