                        <p>The scroll direction of the grid.</p>

<p>The grid layout scrolls along one axis only, either horizontally or vertically. 
The default value of this property is <code>UICollectionViewScrollDirectionVertical</code>.</p>

<div class="aside aside-parameter">
    <p class="aside-title">Parameter</p>
    Parameter scrollDirection:     The scroll direction of the grid

</div>

                      </div>
                      <div class="declaration">
                        <h4>Declar