class Async::Container::Generic

@returns [Boolean]
This state is updated by the process readiness protocol mechanism. See {Notify::Client} for more details.
e.g. `:ready`.
Returns true if all children instances have the specified status flag set.

def status?(flag)
	# This also returns true if all processes have exited/failed:
	@state.all?{|_, state| state[flag]}
end