src/Integration/Subcolumns.php
public function hookParseTemplate(\Template $template)
    {
        if (TL_MODE == 'BE'
            && $template->getName() == 'be_subcolumns'
            && Bootstrap::getConfigVar('grid-editor.backend.replace-subcolumns-template')
        ) {
            $template->setName('be_subcolumns_bootstrap');
        }
    }
public function hookParseTemplate(\Template $template)
    {
        if (TL_MODE == 'BE'
            && $template->getName() == 'be_subcolumns'
            && Bootstrap::getConfigVar('grid-editor.backend.replace-subcolumns-template')
        ) {
            $template->setName('be_subcolumns_bootstrap');
        }
    }
ParseTemplate hook being used to beatify the backend view.

@param \Template $template The template.

@return void