code: public function get($key, $defaultValue = null)
  	{
  		try
  		{
  			return $this->getRecursive($key, $this->data);
  		}
  		catch (ElementNotFoundException $e)
  		{
  			return $defaultValue;
  		}
  	}
docs: Returns the value of $key, if $key exists. Otherwise $defaultValue will be returned
  
  @param $key string
  @param $defaultValue
  @return mixed