This storage is in the global scope. However the scope is limited to the underlying filesystem. I.e. the scope is not shared between hosts.
Author: Markus Malkusch (markus@malkusch.de)
Inheritance: implements bandwidthThrottle\tokenBucket\storage\Storage, implements bandwidthThrottle\tokenBucket\storage\scope\GlobalScope
 /**
  * Tests deleting fails.
  *
  * @test
  * @expectedException bandwidthThrottle\tokenBucket\storage\StorageException
  */
 public function testRemoveFails()
 {
     $data = new vfsStreamFile("data");
     $root = vfsStream::setup('test');
     $root->chmod(0);
     $root->addChild($data);
     $storage = new FileStorage(vfsStream::url("test/data"));
     $storage->remove();
 }