get_data_async

Description:

public async uint8[] get_data_async (ulong attr_type, Allocator allocator, Cancellable? cancellable) throws Error

Get the data for the specified attribute from the object.

This call will return immediately and complete asynchronously.

this	The object to get attribute data from.
attr_type	The attribute to get data for.
allocator	An allocator with which to allocate memory for the data, or `null` for default.
cancellable	Optional cancellation object, or `null`.
callback	Called when the operation completes.
user_data	Data to be passed to the callback.