SolrQuery::addHighlightField Maps to hl.fl &reftitle.description; public SolrQuerySolrQuery::addHighlightField stringfield Maps to hl.fl. This is used to specify that highlighted snippets should be generated for a particular field &reftitle.parameters; field Name of the field &reftitle.returnvalues; Returns the current SolrQuery object, if the return value is used.