referenced breadcrumb code vc_templates/breadcrumb.php

breadcrumb.php

<?php
/*
Element Description: VC Info Box
 */

// Element Class
class vcbreadcrumbs extends WPBakeryShortCode {

	// Element Init
	function __construct() {
		add_action( 'init', array( $this, 'vc_breadcrumbs_mapping' ) );
		add_shortcode( 'vc_breadcrumbs', array( $this, 'vc_breadcrumbs_html' ) );
	}

	// Element Mapping
	public function vc_breadcrumbs_mapping() {

		// Stop all if VC is not enabled
		if ( !defined( 'WPB_VC_VERSION' ) ) {
			return;
		}

		// Map the block with vc_map()
		vc_map(
			array(
				'name' => __('Yoast Breadcrumbs', 'text-domain'),
				'base' => 'vc_breadcrumbs',
				'description' => __('Yoast Breadcrumbs', 'text-domain'),
				'category' => __('My Custom Elements', 'text-domain'),
				/* 'icon' => get_template_directory_uri().'/assets/img/vc-icon.png', */
				'params' => array()
			)
		);

	}


	// Element HTML
	public function vc_breadcrumbs_html( $atts ) {

		echo '<div class="breadcrumb_container clearfix">';
		if ( function_exists('yoast_breadcrumb') ) :
			yoast_breadcrumb('<p class="breadcrumbs">', '</p>');
		endif;
		echo '</div>';

	}

} // End Element Class

// Element Class Init
new vcbreadcrumbs();

?>