src/Mapper/FileSystem/FileSystemMapper.php
public function updateParameter(ParameterInterface $parameter)
    {
        $data = $this->read($parameter->getNamespace());
        $data[$parameter->getName()] = $parameter->getValue();
        $this->write($parameter->getNamespace(), $data);
    }
public function updateParameter(ParameterInterface $parameter)
    {
        $data = $this->read($parameter->getNamespace());
        $data[$parameter->getName()] = $parameter->getValue();
        $this->write($parameter->getNamespace(), $data);
    }
{@inheritDoc}