title: Vue.js 2/Vuex - How to call getters from modules that has attribute namespaced:true without mapGetters?
body: <p>This is my module:</p>
  
  <pre><code>const ModuleA={
     namespaced:true,
     state:{
        categoryList:[
           {name:'all', isActive:true},
           {name:'negotiation', isActive:false},
        ]
     },
     getters:{
        getCategory:(state)=&gt;(index)=&gt;{
          return state.categoryList[index];
        },
     }
  }
  </code></pre>
  
  <p>Without <code>namespaced:true</code>, I can call <code>getCategory</code> with <code>this.$store.getters.getCategory(this.index)</code>. </p>
  
  <p>How to call <code>getCategory</code> with <code>namespaced:true</code>? I can't use <code>mapGetters</code> because I have to pass parameter to the function.</p>