save_hostname_async

Description:

public async bool save_hostname_async (string? hostname, Cancellable? cancellable) throws Error

Requests that the machine's persistent hostname be set to the specified value or cleared.

this	the nmclient
hostname	the new persistent hostname to set, or null to clear any existing persistent hostname
cancellable	a Cancellable, or null
callback	callback to be called when the operation completes
user_data	caller-specific data passed to `callback`