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                    <p:treeNode type="document" icon="pi pi-file">
                        <h:outputText value="#{doc.name}"/>
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                    <p:treeNode type="excel" icon="pi pi-file-excel">
                        <h:outputText value="#{doc.name}"/>
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                    <p:treeNode type="travel" icon="pi pi-file-pdf">
                        <h:outputText value