<p-treeTable [value]="filesBasic">
  <ng-template pTemplate="header">
    <tr>
      <th>Name</th>
      <th>Size</th>
      <th>Type</th>
    </tr>
  </ng-template>
  <ng-template pTemplate="body" let-rowNode let-rowData="rowData">
    <tr [ttRow]="rowNode">
      <td>
        <p-treeTableToggler [rowNode]="rowNode"></p-treeTableToggler>
        { { rowData.name } }
      </td>
      <td>{ { rowData.size } }</td>
      <td>{ { rowData.type } }</td>
    </tr>
  </ng-template>
</p-treeTable>