if ( isset( $options['FOR UPDATE'] ) ) {
$postLimitTail .= ' FOR UPDATE OF ' .
implode( ', ', array_map( [ $this, 'tableName' ], $options['FOR UPDATE'] ) );
if ( isset( $options['FOR UPDATE'] ) ) {
$postLimitTail .= ' FOR UPDATE OF ' .
implode( ', ', array_map( [ $this, 'tableName' ], $options['FOR UPDATE'] ) );