addr, err := windows.MapViewOfFile(h, syscall.FILE_MAP_READ|syscall.FILE_MAP_WRITE, 0, 0, 0)
	if err != nil {
		return Data{}, fmt.Errorf("MapViewOfFile %s: %w", f.Name(), err)
	}
	// need to remember addr and h for unmapping
	return Data{f, unsafe.Slice((*byte)(unsafe.Pointer(addr)), size), h}, nil
}

func munmapFile(d Data) error {
	err := windows.UnmapViewOfFile(uintptr(unsafe.Pointer(&d.Data[0])))

    ```Python hl_lines="5  12-16"
    {!> ../../../docs_src/security/tutorial002.py!}
    ```

## Create a `get_current_user` dependency

Let's create a dependency `get_current_user`.

Remember that dependencies can have sub-dependencies?

`get_current_user` will have a dependency with the same `oauth2_scheme` we created before.

    {!> ../../../docs_src/cookie_params/tutorial001.py!}
    ```

!!! note "Technical Details"
    `Cookie` is a "sister" class of `Path` and `Query`. It also inherits from the same common `Param` class.

    But remember that when you import `Query`, `Path`, `Cookie` and others from `fastapi`, those are actually functions that return special classes.

!!! info

# for example k8s.io/cmd/kube-scheduler/app/config/config.go.
#
# By default, structured logging call parameters are checked, but usage of
# those calls is not required. That is changed on a per-file basis.
#
# Remember to clean the golangci-lint cache when changing the configuration and
# running the verify-golangci-lint.sh script multiple times, otherwise
# golangci-lint will report stale results:
#    _output/local/bin/golangci-lint cache clean

            }
            // resolved, so remember it
            resolvedProvider = Cast.uncheckedCast(results.stream().findFirst().get().getService());
        }
        return resolvedProvider;
    }

    @Nonnull
    @Override
    public Class<T> getType() {

    And Pydantic's `Field` returns an instance of `FieldInfo` as well.

    `Body` also returns objects of a subclass of `FieldInfo` directly. And there are others you will see later that are subclasses of the `Body` class.

    Remember that when you import `Query`, `Path`, and others from `fastapi`, those are actually functions that return special classes.

!!! tip

	enc.w = append(enc.w, w)
}

// popWriter pops the innermost writer.
func (enc *Encoder) popWriter() {
	enc.w = enc.w[0 : len(enc.w)-1]
}

func (enc *Encoder) setError(err error) {
	if enc.err == nil { // remember the first.
		enc.err = err
	}
}

// writeMessage sends the data item preceded by an unsigned count of its length.
func (enc *Encoder) writeMessage(w io.Writer, b *encBuffer) {

		if err != nil {
			klog.InfoS("Could not construct volume information", "podName", volume.podName, "volumeSpecName", volume.volumeSpecName, "err", err)
			// We can't reconstruct the volume. Remember to check DSW after it's fully populated and force unmount the volume when it's orphaned.
			rc.volumesFailedReconstruction = append(rc.volumesFailedReconstruction, volume)
			continue
		}

// (E.g.: 0.1m will rounded up to 1m.)
// This may be extended in the future if we require larger or smaller quantities.
//
// When a Quantity is parsed from a string, it will remember the type of suffix
// it had, and will use the same type again when it is serialized.
//
// Before serializing, Quantity will be put in "canonical form".
// This means that Exponent/suffix will be adjusted up or down (with a

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