if (type === 'SEMICOLON' && !/;$/.test(preceedingSubfield.value)) {
                    const nextValue = preceedingSubfield.value + ' ;';
                    debug(`Updated subfield ${preceedingSubfield.code} from '${preceedingSubfield.value}' to '${nextValue}'`);
                    preceedingSubfield.value = nextValue;
                }