src/Type/Definition/CustomScalarType.php
public function parseValue($value)
    {
        if (isset($this->config['parseValue'])) {
            return call_user_func($this->config['parseValue'], $value);
        }

        return $value;
    }
public function parseValue($value)
    {
        if (isset($this->config['parseValue'])) {
            return call_user_func($this->config['parseValue'], $value);
        }

        return $value;
    }
@param mixed $value

@return mixed