src/Viserio/Component/Config/ParameterProcessor/AbstractParameterProcessor.php
protected function parseParameter(string $parameter): string
    {
        \preg_match('/\%' . static::getReferenceKeyword() . '\:(.*)\%/', $parameter, $matches);

        if (\count($matches) !== 0) {
            return $matches[1];
        }

        return $parameter;
    }
protected function parseParameter(string $parameter): string
    {
        \preg_match('/\%' . static::getReferenceKeyword() . '\:(.*)\%/', $parameter, $matches);

        if (\count($matches) !== 0) {
            return $matches[1];
        }

        return $parameter;
    }
Get the value without the reference keyword.

@param string $parameter

@return string