src/Type/IdentifierType.php
public function decode($value, Field $field, Codec $codec = null)
    {
        if (empty($value)) {
            return null;
        }

        /** @var Identifier $className */
        $className = $field->getClassName();

        try {
            return $className::fromString((string) $value);
        } catch (\Exception $e) {
            throw new DecodeValueFailed($value, $field, $e->getMessage());
        }
    }
public function decode($value, Field $field, Codec $codec = null)
    {
        if (empty($value)) {
            return null;
        }

        /** @var Identifier $className */
        $className = $field->getClassName();

        try {
            return $className::fromString((string) $value);
        } catch (\Exception $e) {
            throw new DecodeValueFailed($value, $field, $e->getMessage());
        }
    }
{@inheritdoc}