public function transformPostContentTable(TableNode $post_table) {
    $aliases = array(
      'reference' => 'field_post_reference',
      'date' => 'field_post_date',
      'links' => 'field_post_links',
      'select' => 'field_post_select',
      'address' => 'field_post_address',
    );

    $table = $post_table->getTable();
    array_walk($table, function (&$row) use ($aliases) {
      // The first column of the row contains the field names. Replace the
      // human readable field name with the machine name if it exists.
      if (array_key_exists($row[0], $aliases)) {
        $row[0] = $aliases[$row[0]];
      }
    });

    return new TableNode($table);
  }