needs_reload

Indicate that an existing Asset in the cache should be reloaded upon the next request.

This can be used when some condition has changed, which may require that an existing asset should be updated. For example, if an external resource has changed or now become available.

Note, the asset is not immediately changed, but will only actually reload on the next call to Asset.request or Asset.request_async.

Parameters:

extractable_type	The extractable_type of the asset that needs reloading
id	The id of the asset asset that needs reloading

Returns:

true if the specified asset exists in the cache and could be marked for reloading.