Add no cache button in wordpress admin menu (/?nocache=1)

    

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      //admin bar nocache button
function add_custom_button_to_admin_menu_bar() {
    global $wp_admin_bar;
    $args = array(
        'id' => 'custom-refresh-button',
        'title' => 'Refresh with no cache',
        'href' => add_query_arg( 'nocache', '1', get_permalink() ),
        'meta' => array(
            'onclick' => 'location.reload(true);'
        )
    );
    $wp_admin_bar->add_node($args);
}

add_action('wp_before_admin_bar_render', 'add_custom_button_to_admin_menu_bar');    
    

	
How to use this
	
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