public function render_block( string $block_content, array $block ): string {

		if ( 'llms/navigation-link' !== $block['blockName'] ) {
			return $block_content;
		}

		$items = $this->filter_nav_items( $this->get_nav_items() );
		$page  = $block['attrs']['page'] ?? 'dashboard';

		if ( ! $page ) {
			return '';
		}

		$url = $items[ $page ]['url'] ?? '';

		// Support conditional URLs, e.g. when user logged in or not.
		if ( ! $url ) {
			return '';
		}

		$label = $block['attrs']['label'] ?? $items[ $page ]['label'] ?? '';

		$html  = '<li class="wp-block-navigation-item">';
		$html .= '<a href="' . esc_url( $url ) . '" class="wp-block-navigation-item__content">';
		$html .= '<span class="wp-block-navigation-item__label">';
		$html .= esc_html( $label );
		$html .= '</span></a></li>';

		return $html;
	}