instance() {
    if (!this.isVueComponent) {
      error('wrapper.instance() can only be called on a Vue instance');
    }

    return this.vm;
  }
/**
   * Returns Vue instance
   *
   * @returns {String} HTML of wrapper element
   */
Returns Vue instance
@returns {String} HTML of wrapper element
Returns Vue instance @returns { String } HTML of wrapper element
instance() {
    if (!this.isVueComponent) {
      error('wrapper.instance() can only be called on a Vue instance');
    }
    return this.vm;
  }
instance ( ) { if ( ! this . isVueComponent ) { error ( 'wrapper.instance() can only be called on a Vue instance' ) ; } return this . vm ; }
Returns Vue instance
 @returns {String} HTML of wrapper element
Returns Vue instance @returns { String } HTML of wrapper element