Undefined method getUpdatedContentHubMetadataCache

[zwack]

While implementing the endpoint for content-hub-metadata-cache which the h5p-hub-client is requesting I came across this call which I'm not sure how to implement. It's not documented in the interface.

h5p-editor-php-library/h5peditor-ajax.class.php

Line 123 in 3b208d7

print '{"success":true,"data":' . $this->core->getUpdatedContentHubMetadataCache(func_get_arg(1)) . '}';

Any help appreciated​.