/**
  * Returns all items having the specified category
  *
  * @param \ThinkopenAt\TimeFlies\Domain\Model\Category $category
  * @return \TYPO3\Flow\Persistence\QueryResultInterface All items as requested by the report configuration
  */
 public function findByCategory(Category $category = NULL)
 {
     $orderings = array('begin' => \TYPO3\Flow\Persistence\QueryInterface::ORDER_ASCENDING);
     $this->setDefaultOrderings($orderings);
     return parent::findByCategory($category);
 }