wait_check_async

Description:

public async bool wait_check_async (Cancellable? cancellable = null) throws Error

Combines wait_async with check_wait_status.

This is the asynchronous version of wait_check.

this	a Subprocess
cancellable	a Cancellable, or null
callback	a TaskReadyCallback to call when the operation is complete
user_data	user_data for `callback`