Defining GWT CellTables with UiBinder

If I define my CellTable in MyView.ui.xml UiBinder file like this:

<ui:UiBinder xmlns:ui='urn:ui:com.google.gwt.uibinder'
xmlns:g='urn:import:com.google.gwt.user.client.ui'
xmlns:c="urn:import:com.google.gwt.user.cellview.client"
ui:generateFormat='com.google.gwt.i18n.rebind.format.PropertiesFormat'
ui:generateKeys='com.google.gwt.i18n.rebind.keygen.MD5KeyGenerator'
ui:generateLocales='default' xmlns:p1="urn:import:com.google.gwt.user.cellview.client">
        ...
    <g:HTMLPanel>           
      <c:CellTable
        addStyleNames='{style.cellTable}'
        pageSize='15'
        ui:field='cellTable' width="100%">  
       </c:CellTable>           
    </g:HTMLPanel>

and then programmaticaly add the columns to the CellTable, everything works fine.

But in an attempt to reduce boilerplate code I would like to define also the table columns in my UiBinder file. I've tried this:

    ...
    <g:HTMLPanel>           
      <c:CellTable
        addStyleNames='{style.cellTable}'
        pageSize='15'
        ui:field='cellTable' width="100%">  
            <c:TextColumn 
                addStyleNames='{style.titleColumn}'
                ui:field="titleColumn"/>
       </c:CellTable>           
    </g:HTMLPanel>

But it produces the following error:

[ERROR] [dialective] - Found unexpected child element Element addStyleNames='{style.titleColumn}'ui:field='titleColumn'> (:33)

How could I define the whole CellTable using UiBinder?