te(d *schema.ResourceData, meta interface{}) error {  mk := "network_interface_sg_attachment_" + d.Get("network_interface_id").(string)  awsMutexKV.Lock(mk)  defer awsMutexKV.Unlock(mk)   sgID := d.Get("security_group_id").(string)  interfaceID := d.Get("network_interface_id").(string)   log.Printf("[DEBUG] 