/**
* Returns filesystem by name.
*
* @param string $filesystem name
* @return null|Filesystem
*/
public function get($filesystem)
{
if (isset($this->filesystems[$filesystem])) {
if (!$this->filesystems[$filesystem] instanceof Filesystem) {
return $this->filesystems[$filesystem] = Instance::ensure($this->filesystems[$filesystem], Filesystem::className());
} else {
return $this->filesystems[$filesystem];
}
} else {
return null;
}
}
