}

  @SuppressWarnings("unused") // compilation test
  public void testSampleCodeFine2() {
    FluentIterable<? extends Number> numbers = getSomeNumbers();

    // Sadly, the following is what users will have to do in some circumstances.

    @SuppressWarnings("unchecked") // safe covariant cast
    Optional<Number> first = (Optional<Number>) numbers.first();

	out, err := runner.exec.Command(iptablesSaveCmd, "-t", string(table)).CombinedOutput()
	if err != nil {
		return false, fmt.Errorf("error checking rule: %v", err)
	}

	// Sadly, iptables has inconsistent quoting rules for comments. Just remove all quotes.
	// Also, quoted multi-word comments (which are counted as a single arg)
	// will be unpacked into multiple args,

	meshWatcher := mesh.NewTestWatcher(&meshconfig.MeshConfig{DiscoverySelectors: []*meshconfig.LabelSelector{{
		MatchLabels: map[string]string{"kubernetes.io/metadata.name": "selected"},
	}}})
	// Note: it is silly to filter cluster scoped resources, but if it is done we should not break.
	namespaces := kclient.New[*corev1.Namespace](c)
	discoveryNamespacesFilter := filter.NewDiscoveryNamespacesFilter(
		namespaces,
		meshWatcher,

Then, you try with the old programmer's friend, editor autocompletion.

You type the first parameter of the function, `first_name`, then a dot (`.`) and then hit `Ctrl+Space` to trigger the completion.

But, sadly, you get nothing useful:

<img src="/img/python-types/image01.png">

### Add types

Let's modify a single line from the previous version.

We will change exactly this fragment, the parameters of the function, from:

					continue
				}
			}
		case syscall.ECONNABORTED:
			// This means that a socket on the listen
			// queue was closed before we Accept()ed it;
			// it's a silly error, so try again.
			continue
		}
		return -1, nil, errcall, err
	}
}

// Fchmod wraps syscall.Fchmod.
func (fd *FD) Fchmod(mode uint32) error {
	if err := fd.incref(); err != nil {

        def mavenModule = javaLibrary.mavenModule

        mavenModule.assertPublished()
        javaLibrary.assertArtifactsPublished()
        mavenModule.parsedPom.scopes['import'] == null

        // Sadly this does not take care of the Gradle metadata
    }

    def 'can publish java library with a #config dependency on a java-platform subproject"'() {
        given:

		return "", fmt.Errorf("no path for %v", obj)

	case *types.Var:
		// Could be:
		// - a field (obj.IsField())
		// - a func parameter or result
		// - a local var.
		// Sadly there is no way to distinguish
		// a param/result from a local
		// so we must proceed to the find.

	case *types.Func:
		// A func, if not package-level, must be a method.

}

// GoPark emits a GoBlock event with the provided reason.
//
// TODO(mknyszek): Replace traceBlockReason with waitReason. It's silly
// that we have both, and waitReason is way more descriptive.
func (tl traceLocker) GoPark(reason traceBlockReason, skip int) {

		return 0, b.err
	}
	n := b.Available()
	if n < utf8.UTFMax {
		if b.Flush(); b.err != nil {
			return 0, b.err
		}
		n = b.Available()
		if n < utf8.UTFMax {
			// Can only happen if buffer is silly small.
			return b.WriteString(string(r))
		}
	}
	size = utf8.EncodeRune(b.buf[b.n:], r)
	b.n += size
	return size, nil
}

// WriteString writes a string.

		default:
			panic(fmt.Sprintf("internal error: invalid kind %v", kind))
		}
		if !ok {
			return fmt.Errorf("invalid char %q", r)
		}
	}

	// Windows disallows a bunch of path elements, sadly.
	// See https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file
	short := elem
	if i := strings.Index(short, "."); i >= 0 {
		short = short[:i]
	}
	for _, bad := range badWindowsNames {