<?php

namespace CloudCreativity\Utils\Collection\Tests;

use CloudCreativity\Utils\Collection\Collection;
use CloudCreativity\Utils\Collection\StandardIterator;
use DateTime;

class DateTimeIterator extends StandardIterator
{

    /**
     * DateTimeIterator constructor.
     *
     * @param DateTime[] ...$items
     */
    public function __construct(DateTime ...$items)
    {
        parent::__construct(...$items);
    }

    /**
     * @param $format
     * @return Collection
     */
    public function format($format)
    {
        return $this->stack->invoke('format', $format);
    }
}

<?php

/**
 * Copyright 2017 Cloud Creativity Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace CloudCreativity\Utils\Collection\Tests;

use CloudCreativity\Utils\Collection\Collection;
use CloudCreativity\Utils\Collection\StandardIterator;
use DateTime;

/**
 * Class DateTimeIterator
 *
 * @package CloudCreativity\Utils\Collection
 */
class DateTimeIterator extends StandardIterator
{

    /**
     * DateTimeIterator constructor.
     *
     * @param DateTime[] ...$items
     */
    public function __construct(DateTime ...$items)
    {
        parent::__construct(...$items);
    }

    /**
     * @param $format
     * @return Collection
     */
    public function format($format)
    {
        return $this->stack->invoke('format', $format);
    }
}

Add doc blocks to test iterator
[Docs] Add doc blocks to test iterator
