Hijack primary menu to add link to vendors store

gistfile1.php

<?php 

/**
 * Only run if wcv_vendors is installed. 
 * 
 * Place this in your themes functions.php file. 
 */

if ( class_exists( 'WCV_Vendors' ) ) { 
  /**
   *  Hijack the PRIMARY menu and add a 'View my store' to the menu. 
   * 
   *  Change primary to whatever your menu location is that you want to hijack. 
   */
  function wcv_vendor_store_link( $items, $args ) {

    if (WCV_Vendors::is_vendor( get_current_user_id() ) ) { 
     
      $wcv_shop_permalink = WC_Vendors::$pv_options->get_option( 'vendor_shop_permalink' ); 
      
        if( is_user_logged_in() && ( $args->theme_location == 'primary' ) ) {

          $vendor = get_userdata( get_current_user_id() ); 
             
          $store_url = '<li><a title="View My Closet" href="'. esc_url( site_url( $wcv_shop_permalink . $vendor->pv_shop_slug ) ) .'">View My Store</a></li>';

          $newitems = $items. $store_url;// enqueue regular menu item

          return $newitems;

        }
    }
    return $items;
  }

  add_filter('wp_nav_menu_items', 'wcv_vendor_store_link', 10, 2); 

}