get acf repeater field

<?php if( have_rows('slides') ): ?>
    <ul class="slides">
    <?php while( have_rows('slides') ): the_row(); 
        $image = get_sub_field('image');
        ?>
        <li>
            <?php echo wp_get_attachment_image( $image, 'full' ); ?>
            <p><?php the_sub_field('caption'); ?></p>
        </li>
    <?php endwhile; ?>
    </ul>
<?php endif; ?>

<?php if( have_rows('repeater', 'option') ): ?>

    <ul>

    <?php while( have_rows('repeater', 'option') ): the_row(); ?>

        <li><?php the_sub_field('title'); ?></li>

    <?php endwhile; ?>

    </ul>

<?php endif; ?>

<?php
/**
 * Field Structure:
 *
 * - parent_repeater (Repeater)
 *   - parent_title (Text)
 *   - child_repeater (Repeater)
 *     - child_title (Text)
 */
if( have_rows('parent_repeater') ):
    while( have_rows('parent_repeater') ) : the_row();

        // Get parent value.
        $parent_title = get_sub_field('parent_title');

        // Loop over sub repeater rows.
        if( have_rows('child_repeater') ):
            while( have_rows('child_repeater') ) : the_row();

                // Get sub value.
                $child_title = get_sub_field('child_title');

            endwhile;
        endif;
    endwhile;
endif;