getData
fun getData(cancellable: <Error class: unknown class>? = null, callback: <Error class: unknown class>?)
Asynchronously get the raw data for @resource.
When the operation is finished, @callback will be called. You can then call webkit_web_resource_get_data_finish() to get the result of the operation.
Parameters
cancellable
a #GCancellable or null to ignore
callback
a #GAsyncReadyCallback to call when the request is satisfied