Как вставить placeholder в textbox? в zk framework 6.5.2

               <row>
                    <label value="ФИО" />
                    <textbox id="client_name1" mold="rounded"
                        disabled="true" hflex="1"
                     value="@{dper_infomain$composer.current.client_name1}" 
                     placeholder="Введите Имя" />                          
                    <textbox id="client_name2" mold="rounded"
                        disabled="true" hflex="1"
                    value="@{dper_infomain$composer.current.client_name2}" 
                    placeholder="Введите Фамилию" />
                    <textbox id="client_name3" mold="rounded"
                        disabled="true" hflex="1"
                    value="@{dper_infomain$composer.current.client_name3}" 
                    placeholder="Введите Отчество" />
                    <label value="Резидент" />
                    <rcombobox id="rezident" mold="rounded"
                        disabled="true" hflex="1"
                selecteditem="@{dper_infomain$composer.current.rezident}" />
                </row>

• Не удалось загрузить /dper_info.zul Причина: Method setPlaceholder not found for class org.zkoss.zul.Textbox
  org.zkoss.zk.ui.metainfo.PropertyNotFoundException: Method
  setPlaceholder not found for class org.zkoss.zul.Textbox at
  org.zkoss.zk.ui.metainfo.Property.resolve(Property.java:190) at
  org.zkoss.zk.ui.metainfo.Property.assign0(Property.java:206) at
  org.zkoss.zk.ui.metainfo.Property.assign(Property.java:173) at
  org.zkoss.zk.ui.metainfo.ComponentInfo.applyProperties(ComponentInfo.java:829) at org.zkoss.zk.ui.impl.AbstractUiFactory.newComponent(AbstractUiFactory.java:96)