public function testImplementsArrayAccess()
{
$this->coll->merge(array('k1' => 'v1', 'k2' => 'v2'));
$this->assertTrue($this->coll->offsetExists('k1'));
$this->assertFalse($this->coll->offsetExists('Krull'));
$this->coll->offsetSet('k3', 'v3');
$this->assertEquals('v3', $this->coll->offsetGet('k3'));
$this->assertEquals('v3', $this->coll->get('k3'));
$this->coll->offsetUnset('k1');
$this->assertFalse($this->coll->offsetExists('k1'));
}