code: public function getRelated($strKey)
  	{
  		if ($this->intIndex < 0)
  		{
  			$this->first();
  		}
  
  		return $this->arrModels[$this->intIndex]->getRelated($strKey);
  	}
docs: Lazy load related records
  
  @param string $strKey The property name
  
  @return Collection|Model The model or a model collection if there are multiple rows