WordPress at a glance
function is not described

Automattic\WooCommerce\Blocks\Assets

AssetDataRegistry::add() public WC 1.0

Interface for adding data to the registry.

{} It's a method of the class: AssetDataRegistry{}

No Hooks.

Return

Null. Nothing.

Usage

$AssetDataRegistry = new AssetDataRegistry();
$AssetDataRegistry->add( $key, $data );
$key(string) (required)
The key used to reference the data being registered. You can only register data that is not already in the registry identified by the given key.
$data(mixed) (required)
If not a function, registered to the registry as is. If a function, then the callback is invoked right before output to the screen.

Code of AssetDataRegistry::add() WC 5.0.0

<?php
public function add( $key, $data ) {
	try {
		$this->add_data( $key, $data );
	} catch ( Exception $e ) {
		if ( $this->debug() ) {
			// bubble up.
			throw $e;
		}
		wc_caught_exception( $e, __METHOD__, [ $key, $data ] );
	}
}