public function renderFieldset(Fieldset $fieldset)
	{
		// Create a new renderer and render the content
		$fieldsetRenderer = new static($this->csrfProvider);

		// Generate all the content
		foreach ($fieldset as $item)
		{
			$fieldsetRenderer->render($item);
		}

		$content = $fieldsetRenderer->getRenderedForm();

		// Create the fieldset tag and add the content
		$tag = Html::tag('fieldset', $fieldset->getAttributes(), $content);

		// Make sure everything is added to the parent table
		$cell = new Table\Cell($tag);
		$cell->setAttributes(['colspan' => 2]);

		$this->table->addCell($cell);
		$this->table->addRow();

		return '';
	}