if isinstance(obj, BaseModel):
        # TODO: remove when deprecating Pydantic v1
        encoders: Dict[Any, Any] = {}
        if not PYDANTIC_V2:
            encoders = getattr(obj.__config__, "json_encoders", {})  # type: ignore[attr-defined]
            if custom_encoder:
                encoders.update(custom_encoder)
        obj_dict = _model_dump(
            obj,
            mode="json",

// See Issue 16204.
func TestCatchInvalidNilValue(t *testing.T) {
	encodeErr, panicErr := encodeAndRecover(nil)
	if panicErr != nil {
		t.Fatalf("panicErr=%v, should not panic encoding untyped nil", panicErr)
	}
	if encodeErr == nil {
		t.Errorf("got err=nil, want non-nil error when encoding untyped nil value")
	} else if !strings.Contains(encodeErr.Error(), "nil value") {

            Object encoder = getEncoderMethod.invoke(null);
            return (String) encodeMethod.invoke(encoder, new Object[]{userInfo.getBytes("UTF-8")});
        } catch (Exception java7OrEarlier) {
            try {
                Method encodeMethod = loader.loadClass("javax.xml.bind.DatatypeConverter").getMethod("printBase64Binary", byte[].class);

		return nil
	}
	info.encInit.Lock()
	defer info.encInit.Unlock()
	enc := info.encoder.Load()
	if enc == nil {
		if building == nil {
			building = make(map[*typeInfo]bool)
		}
		building[info] = true
		enc = compileEnc(ut, building)
		info.encoder.Store(enc)
	}
	return enc
}

func (enc *Encoder) encode(b *encBuffer, value reflect.Value, ut *userTypeInfo) {
	defer catchError(&enc.err)

        @Override
        public void write(Encoder encoder, DefaultTestFailure value) throws Exception {
            encoder.writeNullableString(value.getDetails().getMessage());
            encoder.writeString(value.getDetails().getClassName());
            encoder.writeString(value.getDetails().getStacktrace());
            encoder.writeBoolean(value.getDetails().isAssertionFailure());

        expect:
        def bytes = encode { Encoder encoder ->
            encoder.outputStream.write(Byte.MIN_VALUE)
            encoder.outputStream.write(Byte.MAX_VALUE)
            encoder.outputStream.write(-1)
            encoder.outputStream.write([1, 2, 3, 4] as byte[])
            encoder.outputStream.write([0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7] as byte[], 2, 4)
        }

        }

        @Override
        public void write(Encoder encoder, Map<String, String> value) throws Exception {
            encoder.writeSmallInt(value.size());
            for (Map.Entry<String, String> entry : value.entrySet()) {
                encoder.writeString(entry.getKey());
                encoder.writeString(entry.getValue());
            }
        }
    }

        }

        @Override
        public void write(Encoder encoder, Build build) throws Exception {
            encoder.writeLong(build.getIdentifier().getMostSignificantBits());
            encoder.writeLong(build.getIdentifier().getLeastSignificantBits());
            encoder.writeBinary(build.getToken());
            encoder.writeLong(build.getStartTime());
            encoder.writeBoolean(build.isInteractive());

            encoder.writeBoolean(singleUse);
            encoder.writeSmallInt(daemonParameters.getNativeServicesMode().ordinal());
            encoder.writeString(daemonUid);
            encoder.writeSmallInt(daemonParameters.getPriority().ordinal());
            encoder.writeSmallInt(daemonOpts.size());
            for (String daemonOpt : daemonOpts) {
                encoder.writeString(daemonOpt);
            }

            store.write(encoder -> {
                encoder.writeByte(COMPONENT);
                componentResultSerializer.write(encoder, component);
            });
        }
    }

    @Override
    public void visitSelector(final DependencyGraphSelector selector) {
        store.write(encoder -> {
            encoder.writeByte(SELECTOR);
            encoder.writeSmallLong(selector.getResultId());