- 
The 
- onPoperShow function uses ref to get the loaded component PopTipTransfer, to call the method through the acquired subcomponent. It didn"t work out.
- subcomponent PopTipTransfer ref is named pop
render: (h, params) => {
    return h("div", [
        h(PopTipTransfer, {
            ref: "pop",
            props: {
                visible: this.poptipTransferVisible
            },
            on: {
                onPopperShow: (value) => {
                    this.$nextTick(() => {
                        console.log(this.$refs);
                    });
                },
            }
        })
 })log is as follows, which only contains the components that I defined in the template template, but cannot be obtained by the pop component:
  
 
