reva2 / jsonapi

        $pathValue = null;

        if ($this->hasValue($data, $path)) {

            $value = $this->getValue($data, $path);

            if ((null === $value) || (is_string($value))) {

                $pathValue = $value;

            } else {

                throw new \InvalidArgumentException(

                    sprintf("Value expected to be a string, but %s given", gettype($value)),

                    400

                );

            }

        }

        $this->restorePath();

            $value = $this->getValue($data, $path);

            if (null === $value) {

                $pathValue = $value;

            } else {

                if (is_string($value)) {

                    $pathValue = \DateTimeImmutable::createFromFormat($format, $value);

                }

                if (!$pathValue instanceof \DateTimeImmutable) {

                    throw new \InvalidArgumentException(

                        sprintf("Value expected to be a date/time string in '%s' format", $format),

                        400

                    );

                }

            }

        }

        $this->restorePath();