func WaitForContext(ctx context.Context, p goprocess.Process) {
	p.WaitFor(WithContext(ctx))
}
func WaitForContext(ctx context.Context, p goprocess.Process) {
	p.WaitFor(WithContext(ctx))
}
// WaitForContext makes p WaitFor ctx. When Closing, p waits for
// ctx.Done(), before being Closed(). It is simply:
//
//   p.WaitFor(goprocess.WithContext(ctx))
//