} elseif ($this->isClassCastable($key) && in_array($this->getCasts()[$key], [AsArrayObject::class, AsCollection::class])) {
            return $this->fromJson($attribute) === $this->fromJson($original);
        }

        return is_numeric($attribute) && is_numeric($original)
            && strcmp((string) $attribute, (string) $original) === 0;
    }

    /**
     * Transform a raw model value using mutators, casts, etc.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return mixed
     */
    protected function transformModelValue($key, $value)
    {
        // If the attribute has a get mutator, we will call that then return what
        // it returns as the value, which is useful for transforming values on
        // retrieval from the model to a form that is more useful for usage.
        if ($this->hasGetMutator($key)) {
            return $this->mutateAttribute($key, $value);
        } elseif ($this->hasAttributeGetMutator($key)) {
            return $this->mutateAttributeMarkedAttribute($key, $value);
        }

        // If the attribute exists within the cast array, we will convert it to
        // an appropriate native PHP type dependent upon the associated value
        // given with the key in the pair. Dayle made this comment line up.
        if ($this->hasCast($key)) {
            return $this->castAttribute($key, $value);
        }

        // If the attribute is listed as a date, we will convert it to a DateTime
        // instance on retrieval, which makes it quite convenient to work with
        // date fields without having to create a mutator for each property.
        if ($value !== null
            && \in_array($key, $this->getDates(), false)) {
            return $this->asDateTime($value);
        }

        return $value;
    }

    /**
     * Append attributes to query when building a query.
     *
     * @param  array|string  $attributes
     * @return $this
     */
    public function append($attributes)
    {
        $this->appends = array_unique(
            array_merge($this->appends, is_string($attributes) ? func_get_args() : $attributes)
        );

        return $this;
    }

    /**
     * Set the accessors to append to model arrays.
     *
     * @param  array  $appends
     * @return $this
     */
    public function setAppends(array $appends)
    {
        $this->appends = $appends;

        return $this;
    }

    /**
     * Return whether the accessor attribute has been appended.
     *
     * @param  string  $attribute
     * @return bool
     */
    public function hasAppended($attribute)
    {
        return in_array($attribute, $this->appends);
    }

    /**
     * Get the mutated attributes for a given instance.
     *
     * @return array
     */
    public function getMutatedAttributes()
    {
        $class = static::class;

        if (! isset(static::$mutatorCache[$class])) {
            static::cacheMutatedAttributes($class);
        }

        return static::$mutatorCache[$class];
    }

    /**
     * Extract and cache all the mutated attributes of a class.
     *
     * @param  string  $class
     * @return void
     */
    public static function cacheMutatedAttributes($class)
    {
        static::$getAttributeMutatorCache[$class] =
            Helper::collect($attributeMutatorMethods = static::getAttributeMarkedMutatorMethods($class))
                    ->mapWithKeys(function ($match) {
                        return [lcfirst(static::$snakeAttributes ? Str::snake($match) : $match) => true];
                    })->all();

        static::$mutatorCache[$class] = Helper::collect(static::getMutatorMethods($class))
                ->merge($attributeMutatorMethods)
                ->map(function ($match) {
                    return lcfirst(static::$snakeAttributes ? Str::snake($match) : $match);
                })->all();
    }

    /**
     * Get all of the attribute mutator methods.
     *
     * @param  mixed  $class
     * @return array
     */
    protected static function getMutatorMethods($class)
    {
        preg_match_all('/(?<=^|;)get([^;]+?)Attribute(;|$)/', implode(';', get_class_methods($class)), $matches);

        return $matches[1];
    }

    /**
     * Get all of the "Attribute" return typed attribute mutator methods.
     *
     * @param  mixed  $class
     * @return array
     */
    protected static function getAttributeMarkedMutatorMethods($class)
    {
        $instance = is_object($class) ? $class : new $class;

        return Helper::collect((new ReflectionClass($instance))->getMethods())->filter(function ($method) use ($instance) {
            $returnType = $method->getReturnType();

            if ($returnType &&
                $returnType instanceof ReflectionNamedType &&
                $returnType->getName() === Attribute::class) {
                $method->setAccessible(true);

                if (is_callable($method->invoke($instance)->get)) {
                    return true;
                }
            }

            return false;
        })->map->name->values()->all();
    }
}