tt_content.listgroup >
# CTYPE: BOOTSTRAP PACKAGE LISTGROUP
tt_content.listgroup =< lib.contentElement
tt_content.listgroup {
    templateName = ListGroup
    dataProcessing {
        10 = TYPO3\CMS\Frontend\DataProcessing\SplitProcessor
        10 {
            fieldName = bodytext
            removeEmptyEntries = 1
            as = items
        }
    }
}