/// <summary>

        /// Dynamic = false无法搜索

        /// </summary>

        public void Dynamicmapping()

        {

            var response = client.IndexExists("employee");

            if (!response.Exists)

            {

                client.CreateIndex("employee");

            }

            client.Map<employee>(m => m.Dynamic(false).Properties(p => p.Text(t => t.Name("last_name").Fielddata().Analyzer("english").Fields(f => f.Keyword(k => k.Name("raw"))))).AutoMap());

        }

        public void CustomDynamictemplate()

        {

            client.Map<employee>(m => m.DynamicTemplates(d => d.DynamicTemplate("es", dy => dy.Match("*_es").MatchMappingType("string").Mapping(ma => ma.Text(te => te.Analyzer("spanish"))))));

        }

        /// <summary>

        /// 别名

        /// </summary>

        public void Alias()

        {

            client.Alias(x=>x.Add(a=>a.Index("employee").Alias("em")));

        }