#vulnerable code 
                                private static Object getValue(final V8Object object, final String key, final V8Map<Object> cache) {
        int valueType = object.getType(key);
        switch (valueType) {
            case V8Value.INTEGER:
                return object.getInteger(key);
            case V8Value.DOUBLE:
                return object.getDouble(key);
            case V8Value.BOOLEAN:
                return object.getBoolean(key);
            case V8Value.STRING:
                return object.getString(key);
            case V8Value.V8_FUNCTION:
                return IGNORE;
            case V8Value.V8_TYPED_ARRAY:
                V8Array typedArray = object.getArray(key);
                try {
                    return ((V8TypedArray) typedArray).getByteBuffer();
                } finally {
                    if (typedArray instanceof V8Array) {
                        typedArray.release();
                    }
                }
            case V8Value.V8_ARRAY:
                V8Array array = object.getArray(key);
                try {
                    return toList(array, cache);
                } finally {
                    if (array instanceof V8Array) {
                        array.release();
                    }
                }
            case V8Value.V8_OBJECT:
                V8Object child = object.getObject(key);
                try {
                    return toMap(child, cache);
                } finally {
                    if (child instanceof V8Object) {
                        child.release();
                    }
                }
            case V8Value.NULL:
                return null;
            case V8Value.UNDEFINED:
                return V8.getUndefined();
            default:
                throw new IllegalStateException("Cannot find type for key: " + key);
        }
    } 
                            #location 17 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                private static Object getValue(final V8Object object, final String key, final V8Map<Object> cache) {
        int valueType = object.getType(key);
        switch (valueType) {
            case V8Value.INTEGER:
                return object.getInteger(key);
            case V8Value.DOUBLE:
                return object.getDouble(key);
            case V8Value.BOOLEAN:
                return object.getBoolean(key);
            case V8Value.STRING:
                return object.getString(key);
            case V8Value.V8_FUNCTION:
                return IGNORE;
            case V8Value.V8_TYPED_ARRAY:
                V8Array typedArray = object.getArray(key);
                try {
                    return toByteBuffer(typedArray);
                } finally {
                    if (typedArray instanceof V8Array) {
                        typedArray.release();
                    }
                }
            case V8Value.V8_ARRAY:
                V8Array array = object.getArray(key);
                try {
                    return toList(array, cache);
                } finally {
                    if (array instanceof V8Array) {
                        array.release();
                    }
                }
            case V8Value.V8_OBJECT:
                V8Object child = object.getObject(key);
                try {
                    return toMap(child, cache);
                } finally {
                    if (child instanceof V8Object) {
                        child.release();
                    }
                }
            case V8Value.NULL:
                return null;
            case V8Value.UNDEFINED:
                return V8.getUndefined();
            default:
                throw new IllegalStateException("Cannot find type for key: " + key);
        }
    }