if not "%JAVA_HOME%"=="" (
    echo JAVA_HOME = "%JAVA_HOME%"
  )
  echo.
  echo Please go to
  echo   http://www.oracle.com/technetwork/java/javase/downloads/index.html
  echo and download a valid Java JDK and install before running Activator.
  echo.
  echo If you think this message is in error, please check
  echo your environment variables to see if "java.exe" and "javac.exe" are

	// MD5 checksum.
	ErrMissingCustomerKeyMD5 = Errorf("The SSE-C request is missing the customer key MD5")

	// ErrInvalidCustomerKey indicates that the SSE-C client key is not valid - e.g. not a
	// base64-encoded string or not 256 bits long.
	ErrInvalidCustomerKey = Errorf("The SSE-C client key is invalid")

	// ErrSecretKeyMismatch indicates that the provided secret key (SSE-C client key / SSE-S3 KMS key)

n(a,b){b(a)};if(!h)throw new Error("Missing input name used for http requests made by server validator");g||(g={}),"string"==typeof g&&(g=a.parseJSON(g)),g[h]=d,a.ajax({url:b,type:"POST",cache:!1,data:g,dataType:"json",error:function(a){return i({valid:!1,message:"Connection failed with status: "+a.statusText},f),!1},success:function(a){i(a,f)}})};a.formUtils.addAsyncValidator({name:"server",validatorFunction:function(a,b,c,d,e,g){var h=c.valAttr("url")||d.backendUrl||document.location.href;g.ad...

                return new SmbTreeHandleImpl(loc, this);
            }

            return connectHost(loc, loc.getServerWithDfs());
        }

    }


    /**
     * @return whether we have a valid tree connection
     */
    @SuppressWarnings ( "resource" )
    public synchronized boolean isConnected () {
        SmbTreeImpl t = getTreeInternal();
        return t != null && t.isConnected();
    }

                if (artifact.getVersion() == null) {
                    // set the recommended version
                    ArtifactVersion selected = artifact.getSelectedVersion();
                    // MNG-2123: null is a valid response to getSelectedVersion, don't
                    // assume it won't ever be.
                    if (selected != null) {
                        artifact.selectVersion(selected.toString());

But this example is still valid and it shows how to interact with the internal components.

///

We can also use this same approach to access the request body in an exception handler.

		return -1, fmt.Errorf("minimum bitrot cycle is %d month(s)", minimumBitrotCycleInMonths)
	}

	return time.Duration(months) * 30 * 24 * time.Hour, nil
}

// LookupConfig - lookup config and override with valid environment settings if any.
func LookupConfig(kvs config.KVS) (cfg Config, err error) {
	if err = config.CheckValidKeys(config.HealSubSys, kvs, DefaultKVS); err != nil {
		return cfg, err
	}

		HiddenIfEmpty: true,
	},
	// Deprecated Oct 2022
	config.KV{
		Key:           Cycle,
		Value:         "",
		HiddenIfEmpty: true,
	},
}

// LookupConfig - lookup config and override with valid environment settings if any.
func LookupConfig(kvs config.KVS) (cfg Config, err error) {
	cfg = Config{
		ExcessVersions: 100,
		ExcessFolders:  50000,
		IdleMode:       0, // Default is on
	}

// This function will block till the operation that produces `h` has
// completed. This is only valid on local TFE_TensorHandles. The pointer
// returned will be on the device in which the TFE_TensorHandle resides (so e.g.
// for a GPU tensor this will return a pointer to GPU memory). The pointer is
// only guaranteed to be valid until TFE_DeleteTensorHandle is called on this
// TensorHandle. Only supports POD data types.

```

O parâmetro `name` **ainda é obrigatório** (não *opicional*) porque ele não possui um valor padrão. Mesmo assim, `name` aceita `None` como valor:

```Python
say_hi(name=None)  # This works, None is valid 🎉
```

A boa notícia é, quando você estiver no Python 3.10 você não precisará se preocupar mais com isso, pois você poderá simplesmente utilizar o `|` para definir uniões de tipos:

```Python hl_lines="1  4"