static final RegularImmutableBiMap<Object, Object> EMPTY =
      new RegularImmutableBiMap<Object, Object>();

  // This reference is used both by the GWT compiler to infer the elements
  // of the lists that needs to be serialized.
  private ImmutableBiMap<V, K> inverse;

  @SuppressWarnings("unchecked") // used only for the empty map, which works for any types
  RegularImmutableBiMap() {
    super(new RegularImmutableMap<K, V>(new HashMap<K, V>()));

#include "tensorflow/core/platform/refcount.h"
#include "tensorflow/core/platform/status.h"

namespace tensorflow {

class FunctionRecord;

// A traced function: this hides the complexity of converting the serialized
// representation between various supported formats e.g. FunctionDef and Mlir
// function.
class AbstractFunction : public core::RefCounted {
 protected:
  enum AbstractFunctionKind { kGraph, kMlir };

			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *nsScannerOptions) Msgsize() (s int) {
	s = 1 + 3 + msgp.StringPrefixSize + len(z.DiskID) + 2 + msgp.IntSize + 2
	if z.Cache == nil {
		s += msgp.NilSize
	} else {
		s += z.Cache.Msgsize()
	}

final class SingletonImmutableBiMap<K, V> extends ImmutableBiMap<K, V> {

  // These references are used both by the custom field serializer, and by the
  // GWT compiler to infer the keys and values of the map that needs to be
  // serialized.
  //
  // Although they are non-final, they are package private and the reference is
  // never modified after a map is constructed.
  K singleKey;
  V singleValue;

					return
				}
			}
		}
		(*z)[zb0001] = zb0002
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z DailyAllTierStats) Msgsize() (s int) {
	s = msgp.MapHeaderSize
	if z != nil {
		for zb0007, zb0008 := range z {
			_ = zb0008

			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z testRequest) Msgsize() (s int) {
	s = 1 + 4 + msgp.IntSize + 7 + msgp.StringPrefixSize + len(z.String)
	return
}

// DecodeMsg implements msgp.Decodable

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

!!! warning
    When you return a `Response` directly, like in the example above, it will be returned directly.

    It won't be serialized with a model, etc.

    Make sure it has the data you want it to have, and that the values are valid JSON (if you are using `JSONResponse`).

!!! note "Technical Details"

			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *TierConfigMgr) Msgsize() (s int) {
	s = 1 + 6 + msgp.MapHeaderSize
	if z.Tiers != nil {
		for za0001, za0002 := range z.Tiers {
			_ = za0002

import (
	"bytes"
	"testing"

	"github.com/tinylib/msgp/msgp"
)

// TestJEntryReadOldToNew1 - tests that adding the RemoteVersionID parameter to the
// jentry struct does not cause unexpected errors when reading the serialized
// old version into new version.
func TestJEntryReadOldToNew1(t *testing.T) {
	readOldToNewCases := []struct {
		je  jentryV1
		exp jentry
	}{
		{jentryV1{"obj1", "tier1"}, jentry{"obj1", "", "tier1"}},

```Python hl_lines="1  18"
{!../../../docs_src/response_directly/tutorial002.py!}
```

## Notes

When you return a `Response` directly its data is not validated, converted (serialized), nor documented automatically.

But you can still document it as described in [Additional Responses in OpenAPI](additional-responses.md){.internal-link target=_blank}.