Astra_Breadcrumb_Trail::add_post_parents( int $post_id )

	protected function add_post_parents( $post_id ) {
		$parents = array();

		while ( $post_id ) {

			// Get the post by ID.
			$post = get_post( $post_id );

			// If we hit a page that's set as the front page, bail.
			if ( 'page' == $post->post_type && 'page' == get_option( 'show_on_front' ) && $post_id == get_option( 'page_on_front' ) ) {
				break;
			}
			// Add the formatted post link to the array of parents.
			$parents[] = sprintf( '<a href="%s">%s</a>', esc_url( get_permalink( $post_id ) ), get_the_title( $post_id ) );

			// If there's no longer a post parent, break out of the loop.
			if ( 0 >= $post->post_parent ) {
				break;
			}
			// Change the post ID to the parent post to continue looping.
			$post_id = $post->post_parent;
		}

		// Get the post hierarchy based off the final parent post.
		$this->add_post_hierarchy( $post_id );

		// Display terms for specific post type taxonomy if requested.
		if ( ! empty( $this->post_taxonomy[ $post->post_type ] ) ) {
			$this->add_post_terms( $post_id, $this->post_taxonomy[ $post->post_type ] );
		}
		// Merge the parent items into the items array.
		$this->items = array_merge( $this->items, array_reverse( $parents ) );
	}