primefacs 6.2 inputtext stop autofill

Question

i am trying to stop the autofill my input text

i used autocomplete="off" but still not work 1

<p:inputText id="username" style="color:black " value="#{userView.selectedUser.username}" required="true" autocomplete="off"
                            requiredMessage="#{msg['field.required.msg']}" label="#{msg['user.addEdit.user.name.title']}"
                            disabled="#{userView.selectedUser.username!=null}" />