core-bundle/src/Resources/contao/dca/tl_page.php
public function addIcon($row, $label, Contao\DataContainer $dc=null, $imageAttribute='', $blnReturnImage=false, $blnProtected=false)
	{
		return Contao\Backend::addPageIcon($row, $label, $dc, $imageAttribute, $blnReturnImage, $blnProtected);
	}
public function addIcon($row, $label, Contao\DataContainer $dc=null, $imageAttribute='', $blnReturnImage=false, $blnProtected=false)
	{
		return Contao\Backend::addPageIcon($row, $label, $dc, $imageAttribute, $blnReturnImage, $blnProtected);
	}
Add an image to each page in the tree

@param array                $row
@param string               $label
@param Contao\DataContainer $dc
@param string               $imageAttribute
@param boolean              $blnReturnImage
@param boolean              $blnProtected

@return string