Stash\Interfaces\ItemInterface::lock PHP Method

    public function lock($ttl = null);

 private function assertDisabledStash(\Stash\Interfaces\ItemInterface $item)
 {
     $this->assertFalse($item->set('true'), 'storeData returns false for disabled cache');
     $this->assertNull($item->get(), 'getData returns null for disabled cache');
     $this->assertFalse($item->clear(), 'clear returns false for disabled cache');
     $this->assertTrue($item->isMiss(), 'isMiss returns true for disabled cache');
     $this->assertFalse($item->extend(), 'extend returns false for disabled cache');
     $this->assertTrue($item->lock(100), 'lock returns true for disabled cache');
 }