func golang.org/x/sync/errgroup.WithContext

2 uses

	golang.org/x/sync/errgroup (current package)
		errgroup.go#L45: func WithContext(ctx context.Context) (*Group, context.Context) {

	github.com/gotd/td/internal/tdsync
		cancel_group.go#L33: 	group, groupCtx := errgroup.WithContext(ctx)