Pinq\ITraversable::take PHP Method

    public function take($amount);

 /**
  * @dataProvider notUniqueData
  */
 public function testThatUniqueUsesTheFirstFoundValueForDuplicates(\Pinq\ITraversable $values, array $data)
 {
     $value1 = [1, 90 => 2, 3, 't' => 'foo', null, true];
     $value2 = [1, 90 => 2, 3, 't' => 'foo', null, true];
     $uniqueValues = $values->take(0)->append([&$value1, &$value2])->unique();
     $this->assertReferenceEquals($value1, $uniqueValues->asArray()[0]);
 }