return 0, io.EOF
	}
	n = copy(b, r.s[off:])
	if n < len(b) {
		err = io.EOF
	}
	return
}

// ReadByte implements the [io.ByteReader] interface.
func (r *Reader) ReadByte() (byte, error) {
	r.prevRune = -1
	if r.i >= int64(len(r.s)) {
		return 0, io.EOF
	}
	b := r.s[r.i]
	r.i++
	return b, nil
}

// UnreadByte complements [Reader.ReadByte] in implementing the [io.ByteScanner] interface.

    @Override public String[] getDefaultCipherSuites() {
      return delegate.getDefaultCipherSuites();
    }

    @Override public String[] getSupportedCipherSuites() {
      return delegate.getSupportedCipherSuites();
    }

    @Override public Socket createSocket(
        Socket socket, String host, int port, boolean autoClose) throws IOException {

            return toolchains;
        }

        return result;
    }

    private PersistedToolchains readToolchains(
            Source toolchainsSource, ToolchainsBuildingRequest request, ProblemCollector problems) {
        if (toolchainsSource == null) {
            return new PersistedToolchains();
        }

        PersistedToolchains toolchains;

func New(cfg Config) (*clientv3.Client, error) {
	if !cfg.Enabled {
		return nil, nil
	}
	cli, err := clientv3.New(cfg.Config)
	if err != nil {
		return nil, err
	}
	cli.KV = namespace.NewKV(cli.KV, cfg.PathPrefix)
	cli.Watcher = namespace.NewWatcher(cli.Watcher, cfg.PathPrefix)
	cli.Lease = namespace.NewLease(cli.Lease, cfg.PathPrefix)
	return cli, nil
}

func parseEndpoints(endpoints string) ([]string, bool, error) {

            return is;
        }
        if (is instanceof ByteArrayInputStream) {
            return is;
        }
        return new BufferedInputStream(is, DEFAULT_BUF_SIZE);
    }

    /**
     * Wraps the output stream with a {@link BufferedOutputStream} if necessary.
     *
     * @param os the output stream
     * @return the wrapped output stream
     */

            .named("Multiset.filter[Multiset, Predicate]")
            .createTestSuite());

    return suite;
  }

  private static TestStringMultisetGenerator unmodifiableMultisetGenerator() {
    return new TestStringMultisetGenerator() {
      @Override
      protected Multiset<String> create(String[] elements) {
        return unmodifiableMultiset(LinkedHashMultiset.create(asList(elements)));
      }

      @Override

    public ScheduledJobDbm asDBMeta() {
        return ScheduledJobDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "scheduled_job";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    @Override
    public ConditionQuery localCQ() {
        return doGetConditionQuery();
    }

    public WebAuthenticationDbm asDBMeta() {
        return WebAuthenticationDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "web_authentication";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    @Override
    public ConditionQuery localCQ() {
        return doGetConditionQuery();
    }

<img src="/img/tutorial/response-model/image02.png">

## Other Return Type Annotations { #other-return-type-annotations }

There might be cases where you return something that is not a valid Pydantic field and you annotate it in the function, only to get the support provided by tooling (the editor, mypy, etc).

### Return a Response Directly { #return-a-response-directly }

        t.parse(raw);
        // Current behavior of test impl: returns same reference
        assertSame(raw, t.toByteArray(), "should return the same reference as mechanismToken");
    }

    @Test
    @DisplayName("Setters accept null and getters return null")
    void settersAcceptNull() {
        TestSpnegoToken t = new TestSpnegoToken();
        t.setMechanismToken(null);