复合组件不支持事件null

Question

我正在尝试在复合commandButton中添加p：confirm，但是会发出以下错误：

<p:confirm> Composite component does not support event null

当我更改为普通的p：commandButton时，它会起作用。

此外，当直接在复合命令链接（完全具有相同的属性）中使用相同的p：confirmDialog（全局）时，它也可以工作。

用法示例：

<myCompositeSuite:commandButton id="buttonId"
    action="#{beanController.action}">
    <p:confirm
        header="Confirm"
        message="Do you confirm this action?"
        icon="ui-icon-alert" />
</myCompositeSuite:commandButton>

复合组件示例（我尝试过的内容在注释中）：

<cc:interface name="commandButton">
    <cc:attribute name="rendered" default="true" />
    <cc:attribute name="value" default="Button" />
    <cc:attribute name="title" />
    <cc:attribute name="style" />
    <cc:attribute name="styleClass" />
    <cc:attribute name="disabled" default="false" />
    <cc:attribute name="ajax" default="false" />
    <cc:attribute name="process" />
    <cc:attribute name="onclick" />
    <cc:attribute name="action" targets="myCompositeButton" />
    <cc:attribute name="immediate" default="false" />
    <cc:attribute name="oncomplete" />
    <cc:attribute name="update" />

    <cc:actionSource name="command" targets="myCompositeButton" />

    <cc:clientBehavior name="click" targets="myCompositeButton" event="click" />
    <!-- <cc:clientBehavior name="confirm" targets="myCompositeButton" event="null" /> -->
    <!-- <cc:clientBehavior name="null" targets="myCompositeButton" event="null" /> -->
</cc:interface>

<cc:implementation>
    <p:commandButton id="myCompositeButton"
        rendered="#{cc.attrs.rendered}"
        value="#{cc.attrs.value}"
        title="#{cc.attrs.title}"   
        immediate="#{cc.attrs.immediate}"
        styleClass="#{cc.attrs.styleClass}"
        style="#{cc.attrs.style}"
        disabled="#{cc.attrs.disabled}"
        onclick="#{cc.attrs.onclick};"
        oncomplete="#{cc.attrs.oncomplete};"
        ajax="#{cc.attrs.ajax}"
        process="#{cc.attrs.process}"
        update="#{cc.attrs.update}">

        <cc:insertChildren />
    </p:commandButton>
</cc:implementation>

我正在使用jsf 2.3版和primefaces 6.2版。