Displaying nested complex Carbon Fields in the front-end templates

page.php

<?php $sections = carbon_get_post_meta( get_the_ID(), 'lk_section', 'complex' ); ?>
<?php if ( ! empty( $sections ) ): ?>
	<?php foreach ( $sections as $section ): ?>

		<section class="<?php echo esc_attr( $section['class'] ); ?>">
			<?php if ( ! empty( $section['lk_row'] ) ): ?>
				<?php foreach ( $section['lk_row'] as $row ): ?>

					<div class="<?php echo esc_attr( $row['class'] ); ?>">
						<?php if ( ! empty( $row['lk_column'] ) ): ?>
							<?php foreach ( $row['lk_column'] as $column ): ?>

								<div class="<?php echo esc_attr( $column['class'] ); ?>">
									... column content goes here ...
								</div>

							<?php endforeach ?>
						<?php endif ?>
					</div>

				<?php endforeach ?>
			<?php endif ?>
		</section>

	<?php endforeach ?>
<?php endif ?>